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NCERT Exemplar Class 12 Biology Solutions Chapter 10 Microbes in Human Welfare

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NCERT Exemplar Class 12 Biology Solutions Chapter 10 Microbes in Human Welfare

Edited By Priyanka kumari | Updated on Aug 26, 2022 12:57 PM IST | #CBSE Class 12th

NCERT exemplar Class 12 Biology solutions chapter 10, is about Microbes in Human Welfare. NCERT exemplar Class 12 Biology chapter 10 solutions will provide an in-depth study in the chapter along with a detailed question-answer section. These study materials have been prepared by professionals who have all-around knowledge about this subject. The students can refer to NCERT exemplar Class 12 Biology solutions chapter 10 pdf download anytime to learn and understand the concepts.

Also, read NCERT Class 12 Biology Solutions

Introduction of NCERT Exemplar Class 12 Biology Solutions Chapter 10 Microbes in Human Welfare.

Multiple Choice Questions:

Question:1

The vitamin whose content increases following the conversion of milk into curd by lactic acid bacteria is
a. vitamin C
b. vitamin D
c. vitamin B12
d. vitamin E

Answer:

The answer is the option (c) vitamin B12

Question:2

Wastewater treatment generates a large quantity of sludge, which can be treated by:
a. anaerobic digesters
b. floc
c. chemicals
d. oxidation pond

Answer:

The answer is the option (a) anaerobic digesters
Explanation: Sludge needs to be subjected to biological treatment which is provided by anaerobic digesters.

Question:3

Methanogenic bacteria are not found in:
a. rumen of cattle
b. gobar gas plant
c. bottom of water-logged paddy fields
d. activated sludge

Answer:

The answer is the option (d) activated sludge.
Explanation: Activated sludge contains aerobic bacteria. It is sent to the digester where it is acted upon by methanogens.

Question:4

Match the following list of bacteria and their commercially important products:

Bacterium
A. Aspergillus niger
B. Acetobacter acetic
C. Clostridium bretylium
D. Lactobacillus
Product
i. Lactic acid
ii. Butyric acid
iii. Acetic acid
iv. Citric acid
Choose the correct match:
a. A-ii, B-iii, C-iv, D-i
b. A-ii, B-iv, C-iii, D-i
c. A-iv, B-iii, C-ii, D-i
d. A-iv, B-i, C-iii, D-ii

Answer:

The answer is the option (c) (i) (d), (ii) (c), (iii) (b), (iv) (a)

Question:5

Match the following list of bioactive substances and their roles:

Bioactive Substance
A. Statin
B. Cyclosporin A
C. Streptokinase
D. Lipase
Role
i. Removal of oil stains
ii. Removal of clots from blood vessels
iii. Lowering of blood cholesterol
iv. Immuno-suppressive agent
Choose the correct match:
a. A-ii, B-iii, C-i, D-iv
b. A-iv, B-ii, C-i, D-iii
c. A-iv, B-i, C-ii, D-iii
d. A-iii, B-iv, C-ii, D-i

Answer:

The answer is the option (d) i.e. (i) (c), (ii) (d), (iii) (b), (iv) (a)
Explanation:

Question:6

The primary treatment of wastewater involves the removal of:
a. dissolved impurities
b. stable particles
c. toxic substances
d. harmful bacteria

Answer:

The answer is the option (b) stable particles
Explanation: Dissolved impurities, toxic substances and harmful bacteria are removed during later processes.

Question:7

BOD of wastewater is estimated by measuring the amount of:
a. total organic matter
b. biodegradable organic matter
c. oxygen evolution
d. oxygen consumption

Answer:

The answer is the option (d) oxygen consumption.
Explanation: BOD stands for biochemical oxygen demand and is thus related to oxygen consumption.

Question:8

Which one of the following alcoholic drinks are produced without distillation?
a. Wine
b. Whisky
c. Rum
d. Brandy

Answer:

The answer is the option (a) Wine

Question:9

The technology of biogas production from cow dung was developed in India largely due to the efforts of:
a. Gas Authority of India
b. Oil and Natural Gas Commission
c. Indian Agricultural Research Institute and Khadi & Village Industries Commission
d. Indian Oil Corporation

Answer:

The answer is the option (c) Indian Agricultural Research Institute and Khadi & Village Industries Commission.

Question:10

The free-living fungus Trichoderma can be used for:
a. killing insects
b. biological control of plant diseases
c. controlling butterfly caterpillars
d. producing antibiotics

Answer:

The answer is the option (b) biological control of plant diseases

Question:11

What would happen if oxygen availability to activated sludge flocs is reduced?
a. It will slow down the rate of degradation of organic matter
b. The centre of flocs will become anoxic, which would cause the death of bacteria and eventually breakage of flocs.
c. Flocs would increase in size as anaerobic bacteria would grow around flocs.
d. Protozoa would grow in large numbers

Answer:

The answer is the option (b) The center of flocs will become anoxic, which would cause death of bacteria and eventually breakage of flocs.

Question:12

Mycorrhiza does not help the host plant in:
a. Enhancing its phosphorus uptake capacity
b. Increasing its tolerance to drought
c. Enhancing its resistance to root pathogens
d. Increasing its resistance to insects

Answer:

The answer is the option (d) Increasing its resistance to insects.

Question:13

Which one of the following is not a nitrogen-fixing organism?
a. Anabaena
b. Nostoc
c. Azotobacter
d. Pseudomonas

Answer:

The answer is the option (d) Pseudomonas
Explanation: Most of the species of Pseudomonas are pathogens; causing diseases in plants and animals.

Question:14

Big holes in Swiss cheese are made by a:
a. a machine
b. a bacterium that produces methane gas
c. a bacterium producing a large amount of carbon dioxide
d. a fungus that releases a lot of gases during its metabolic activities

Answer:

The answer is the option (c) a bacterium producing a large amount of carbon dioxide
Explanation: A bacterium called Propionibacterium sharmanii produces a large amount of carbon dioxide during fermentation. This is the reason of big holes in Swiss cheese.

Question:15

The residue left after methane production from cattle dung is:
b. buried in landfills
c. used as manure
d. used in civil construction

Answer:

The answer is the option (c) used as manure

Question:16

Methanogens do not produce:
a. oxygen
b. methane
c. hydrogen sulfide
d. carbon dioxide

Answer:

The answer is the option (a) oxygen
Explanation: methanogens produce methane, carbon dioxide and hydrogen sulphide.

Question:17

Activated sludge should have the ability to settle quickly so that it can:
a. be rapidly pumped back from sedimentation tank to aeration tank
b. absorb pathogenic bacteria present in wastewater while sinking to the bottom of the settling tank
c. be discarded and anaerobically digested
d. absorb colloidal organic matter

Answer:

The answer is the option (c) be discarded and anaerobically digested

Question:18

Column I
A. Ladybird
B. Mycorrhiza
C. Biological control
D. Biogas
Column II
i. Methane bacterium
ii. Trichoderma
iii. Aphids
iv. Glomus

Answer:

The answer is the option (b) (i) (c), (ii) (d), (iii) (b), (iv) (a)

Very Short Answer Type Questions:

Question:1

Why does ‘Swiss cheese’ have big holes?

Answer:

A bacterium called Propionibacterium sharmanii produces a large amount of carbon dioxide during fermentation. This is the reason for big holes in Swiss cheese.

Question:2

What are fermentors?

Answer:

Exceptionally large vessels, which are used for industrial-scale fermentation, are called fermenters.

Question:3

Name a microbe used for statin production. How do statins lower blood cholesterol level?

Answer:

The yeast Monascus purpureus is used for commercial production of stain. Stain competitively inhibits the enzyme responsible for cholesterol formation and thus helps in lowering the blood cholesterol level.

Question:4

Why do we prefer to call secondary wastewater treatment as a biological treatment?

Answer:

Secondary treatment of wastewater involves action by microbes. Due to this, secondary treatment is called biological treatment.

Question:5

What for Nucleopolyhydro viruses are being used nowadays?

Answer:

Nucleopolyhydro viruses are used for controlling pests and other arthropods in farms. These are narrow-spectrum viruses and do not harm plants, cattle and humans or even on non-target insects.

Question:6

How has the discovery of antibiotics helped mankind in the field of medicine?

Answer:

Antibiotics have created a revolution in the treatment of diseases.
Many infectious diseases which were incurable earlier can now be treated with antibiotics. Antibiotics have helped in saving millions of lives.

Question:7

Why is distillation required for producing certain alcoholic drinks?

Answer:

Distillation is done to remove most of the water and impurities from certain alcoholic drinks.

Question:8

Write the most important characteristic that Aspergillus niger, Clostridium bretylium, and Lactobacillus share.

Answer:

All of them produce organic acids. Aspergillus niger produces citric acid, Clostridium butylicum produces butyric acid, and Lactobacillus produces lactic acid.

Question:9

What would happen if our intestine harbours microbial flora exactly similar to that found in the rumen of cattle?

Answer:

The microbial flora in the rumen of cattle facilitates digestion of cellulose. If such microbial flora is present in our intestine, then humans will also be able to digest cellulose.

Question:10

Give any two microbes that are useful in biotechnology.

Answer:

Streptococcus, Bacillus thuringiensis

Question:12

Name any genetically modified crop.

Answer:

BT cotton is a GM crop and contains a gene from Bacillus thuringiensis which helps in killing pests.


Question:13

Why are blue-green algae not popular as biofertilisers?

Answer:

Blue-green algae can proliferate in water and can carry out nitrogen fixation. However, paddy is the only crop which grows in stagnant water. Most of the other crops do not need stagnant water to grow. This is the main reason for the low popularity of blue-green algae as biofertiliser.

Question:14

Which species of Penicillium produces Roquefort cheese?

Answer:

Penicillium roquefortine.

Question:15

Name the states involved in the Ganga action plan.

Answer:

Uttarakhand, Uttar Pradesh, Bihar, Jharkhand and West Bengal

Question:16

Name any two industrially important enzymes.

Answer:

Lipase and pectinase

Question:17

Name an immune immunosuppressive agent?

Answer:

Cyclosporin A

Question:18

Give an example of a rod-shaped virus.

Answer:

Tobacco Mosaic Virus (TMV)

Question:20

Name a microbe used for the production of Swiss cheese.

Answer:

Propionibacterium sharmanii

Short Answer Type Questions:

Question:1

Why are flocs important in biological treatment of wastewater?

Answer:

Flocs are masses of bacteria associated with fungal filaments to form mesh-like structure. Flocs digest most of the organic material from the sludge. Thus, floc helps in reducing the BOD (Biochemical Oxygen Demand) of the effluent. This helps in further treatment of sludge.

Question:2

How has the bacterium Bacillus thuringiensis helped us in controlling caterpillars of insect pests?

Answer:

Bacillus thuringiensis produces an endotoxin which when ingested and released in the gut of the larvae of insect pest disrupts its gut lining, and thus caterpillars are killed. By killing the caterpillars, it helps in pest control.

Question:3

How do mycorrhizal fungi help the plants harbouring them?

Answer:

Mycorrhizal fungi absorb phosphorus from soil and pass it to the plant. These fungi also help the plant to develop resistance against root-borne pathogens and develop sustainability against salinity and drought.

Question:4

Why are cyanobacteria considered useful in paddy fields?

Answer:

Cyanobacteria are important bio fertiliser in paddy fields. They add organic matter to the soil and enhance soil fertility. Hence, they are considered useful in paddy fields.

Question:5

How was Penicillin discovered?

Answer:

Penicillin was discovered accidentally. Alexander Fleming was working on Staphylococci when he observed that in one of the unwashed culture plates, bacteria did not grow around a mould. He could observe that it was because of a chemical released by the mould. He named it Penicillin after the mould Penicillium notatum.

Question:6

Name the scientists who were credited for showing the role of Penicillin as an antibiotic?

Answer:

Alexander Fleming, Ernst Chain and Howard Florey.

Question:7

How do bioactive molecules of fungal origin help in restoring good health of humans?

Answer:

Following are some bioactive molecules of fungal origin which help in restoring good health in humans:
Cyclosporin A is produced by Trichoderma polysporum and is used as an immunosuppressive agent. Penicillin is a major antibiotic which is produced from Penicillium notatum.

Question:8

What roles do enzymes play in detergents that we use for washing clothes? Are these enzymes produced from some unique microorganisms?

Answer:

Lipase is used in detergent formulations because it helps in removing oily stains from laundry. Lipases are prepared from the yeast Saccharomyces cerevisiae.

Question:9

What is the chemical nature of biogas? Name an organism which is involved in biogas production?

Answer:

Biogas is mainly composed of methane; other gases are CO2 and H2. It is highly inflammable and is used as fuel, especially in rural areas. Methanogen bacteria are involved in the production of biogas.

Question:10

How do microbes reduce the environmental degradation caused by chemicals?

Answer:

Many harmful chemicals are produced as a byproduct of modern lifestyle. These chemicals are finally dumped in soil and end up contaminating the soil. Soil contamination can be removed with the help of microbes.
The removal of soil contamination with the help of microbes is called bioremediation. This is usually achieved by bio-augmentation of soil flora.

Question:11

What is a broad-spectrum antibiotic? Name one such antibiotic.

Answer:

An antibiotic which is effective against most of the common pathogenic bacteria is called a broad-spectrum antibiotic. Cefoperazone and Ceftazidime are examples of broad-spectrum antibiotic.

Question:12

What are viruses parasitising bacteria called? Draw a well-labelled diagram of the same.

Answer:


A virus which attacks bacteria is called bacteriophage. The virus enters a bacterial cell and controls the genetic material of bacteria in order to produce more viruses.

Question:13

Which bacterium has been used as a clot-buster? What is its mode of action?

Answer:

Streptococcus is genetically modified to make streptokinase which is used as clot buster. Streptokinase carries out thrombolysis which breaks the clot into smaller fragments, and thus clot is dissolved.

Question:

What are bio fertilisers? Give two examples.

Answer:

Organisms which enrich nutrients in the soil are called bio-fertilisers. Azotobacter and Rhizobium are examples of biofertilisers.

Long Answer type Questions:

Question:1

Why is aerobic degradation more important than anaerobic degradation for the treatment of large volumes of wastewaters rich in organic matter? Discuss.

Answer:

Organic matter in wastewater consumes a lot of oxygen to carry on various biological processes. It results in a reduction of oxygen level in the surrounding air and thus can increase air pollution. Consumption of oxygen by organic matter in wastewater is measured by BOD (Biochemical Oxygen Demand). A higher level of BOD indicates a higher polluting potential of wastewater. It is important to reduce the BOD so that pollution can be reduced. Hence, aerobic degradation is more important than anaerobic degradation for the treatment of large volumes of wastewaters rich in organic matter.
BOD level is reduced by aerobic degradation, which is carried out by floc. Flocs are associations of bacteria and fungi which form mesh-like structures. Flocs eat away most of the organic matter in wastewater and thus help in reducing BOD. The sludge is ready for anaerobic degradation once BOD is pulled down below a threshold level.

Question:2

(a) Discuss the major programs that the Ministry of Environment and Forests, Government of India, has initiated for saving major Indian rivers from pollution.

(b) Ganga has recently been declared the national river. Discuss the implication with respect to pollution of this river.

Answer:

(a) The Government has launched the Ganga Action Plan and Yamuna Action Plan to reduce pollution level in these rivers. Under the Ganga Action Plan, dredging and cleaning of the riverbed are being carried out. These activities are especially intensified at places where the river passes through a major urban centre. The current government has named the Ganga Action Plan as Namami Gange.

(b) Ganga is probably the most important river for India. It is important from a religious perspective as well as from an economic perspective. The Gangetic Plain is one of the most densely populated areas in the world and supports the livelihood of billions of people. A high level of pollution in this river will jeopardise the very existence of people who have to live in the Gangetic Plain for thousands of years. High level of pollution will do irreparable damage to the ecosystem in our country.

Question:4

Describe the main ideas behind the biological control of pests and diseases.

Answer:

Biological control of pests and diseases is based on the interdependency among various components of an ecosystem. This approach is also based on the acknowledgement of potential harm caused by chemical control of pests and diseases.
Checks and Balances in the Ecosystem: In any given ecosystem; various organisms are dependent on each other and on abiotic factors. Pests are also part of the ecosystem. They turn problematic for farmers only when their population goes beyond a certain level. If the system of natural check and balances can be understood, then it would be pretty easy for farmers to control the pests without harming useful insects.
Drawbacks of Chemical Control: Synthetic pesticides are highly effective in pest control, but their use leads to collateral damage. Many useful insects are killed in the process. This problem can be removed by using biological control.
Minimising Pollution: Use of pesticides has another drawback, i.e. creating soil pollution and groundwater pollution. If biological control is applied, then chances of soil pollution and groundwater pollution can be minimised.

Question:5

(a) What would happen if a large volume of untreated sewage is discharged into a river?

(b) In what way anaerobic sludge digestion is important in sewage treatments?

Answer:

(a) Following are the harmful effects of untreated sewage being discharged into a river:
  1. It will contaminate water, making it unfit for drinking.
  2. It will alter the pH level of water, which can be detrimental to aquatic plants and animals.
  3. This will also pollute groundwater.
  4. Fish from contaminated water will become unfit for human consumption.

(b) Anaerobic sludge digestion is important from the following angles:
(i) It helps in the production of biogas which can be used as fuel. Biogas from sewage treatment plants is being used for electricity generation at many places in the world.
(ii) The slurry can be used as manure. This will help in improving soil fertility.
(iii) This also helps in reducing soil pollution and water pollution.

Question:6

Which type of food would have lactic acid bacteria? Discuss their useful application.

Answer:

Lactic acid bacteria are present in milk products which are prepared by fermentation. They are also found in pickled vegetables and wines. Following are some useful applications of lactic acid bacteria:
  1. They are used for making curd and cheese.
  2. They are used for making pickled vegetables. Kimchi is a popular South Korean dish, and it contains lactic acid.
  3. Lactic and bacteria are used for making probiotics. Probiotics are taken as supplements in order to restore the gut flora. Probiotics can help in getting rid of diarrhoea, irritable bowel syndrome, etc.
  4. Many types of bread are made with the help of lactic acid bacteria.

Chapter 10 contains topics like the diversity of the bad and the good microbes, bioactive molecules, in agriculture, beverages, sewage treatment, medicine – antibiotics, vaccines, chemicals, enzymes, the role of microbes in different industries and households, and others. These tiny microscopic beings are an important aspect of our ecosystem, by learning about them the students will have better awareness about our environment too.

The NCERT exemplar Class 12 Biology solutions chapter 10, describes the roles of microbes in the evolution of living beings on this earth. With NCERT exemplar Class 12 Biology chapter 10 solutions, students will understand the world of fungi, bacteria, yeasts and many other tiny beings in detail.

Major Subtopics Covered in NCERT Exemplar Class 12 Biology Solutions Chapter 10 Microbes in Human Welfare

  • Microbes In Household Products
  • Microbes In Industrial Products
  • Microbes In Sewage Treatment
  • Microbes In Production Of Biogas
  • Microbes As Biocontrol Agents
  • Microbes As Biofertilizers

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NCERT Exemplar Class 12 Biology Solutions Chapter 10 Microbes in Human Welfare- Learning Outcome

In Class 12 Biology NCERT exemplar solutions chapter 10, students will get to learn about the microbes that are there in human welfare. They will study the microbes like bacteria, fungi, viruses. Every topic covered in NCERT exemplar Class 12 Biology chapter 10 solutions is well equipped with accurate information.

This chapter particularly describes the role of microorganisms in daily life and how they prove to be vital to us. Microbes are the entities that are not visible through our naked eyes, some of these are bacteria, yeasts, fungi, and many others. Overall, NCERT exemplar Class 12 Biology solutions chapter 10 not only provides you with the information but also at the same time is fun and interesting.

NCERT Exemplar Class 12 Biology Chapter Wise Links:

Important Topics Covered in NCERT Exemplar Class 12 Biology Solutions Chapter 10

- The entities play a very major role in maintaining balance in an ecosystem. Some of the microbes can be fatal, while others can be beneficial for mankind. All the important details related to microbes is very well mentioned in NCERT Exemplar Class 12 Biology solutions chapter 12.

- NCERT exemplar Class 12 Biology solutions chapter 10 solutions gives you all the accurate and required information about the different microbes and its use in mankind. Moreover, it also gives you information about the types of microbes present in different places.

- The chapter is very helpful for the students who wish to aspire a career in the field of biology or biotechnology. The students will learn about the diversity of good and bad microbes, the role of microbes in different industries and households.

NCERT Exemplar Class 12 Solutions Subject Wise:

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Frequently Asked Question (FAQs)

1. 1. What is the best way to solve various questions in the Class 12 Biology NCERT exemplar solutions chapter 10?

The students can study each section of the chapter completely and attempt the question bank given with the NCERT exemplar Class 12 Biology solutions chapter 10 pdf download, to study and grasp the answer format completely.

2. 2. What are the main points covered in the NCERT exemplar Class 12 Biology solutions chapter 10? The topics included in the NCERT exemplar solutions for Class 12 Biology chapter 10 are -

1. Microbes in Household Products

2. Microbes in Industrial Products

3. Microbes in Sewage Treatment

4. Microbes in Production of Biogas

5. Microbes as Biocontrol Agents

6. Microbes as Biofertilizers

And other detailed explanations of related topics too are mentioned.

3. 3. Is the NCERT exemplar Class 12 Biology chapter 10 solutions enough for the students to clear the exams?

Yes, along with the textbooks the student can rely on NCERT Exemplar Class 12 Biology solutions chapter 10, for any reference and guidance.

4. 4. How was the course designed for NCERT exemplar Class 12 Biology chapter 10 solutions?

The course for Class 12 Biology NCERT exemplar solutions chapter 10 was designed by a group of professionals who have complete knowledge about what kind of questions are asked and how the answers have to be formed for the students to excel in their examinations.

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Have a question related to CBSE Class 12th ?

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Thank you

Hope this information helps you.

hello,

Yes you can appear for the compartment paper again since CBSE gives three chances to a candidate to clear his/her exams so you still have two more attempts. However, you can appear for your improvement paper for all subjects but you cannot appear for the ones in which you have failed.

I hope this was helpful!

Good Luck

Hello dear,

If you was not able to clear 1st compartment and now you giving second compartment so YES, you can go for your improvement exam next year but if a student receives an improvement, they are given the opportunity to retake the boards as a private candidate the following year, but there are some requirements. First, the student must pass all of their subjects; if they received a compartment in any subject, they must then pass the compartment exam before being eligible for the improvement.


As you can registered yourself as private candidate for giving your improvement exam of 12 standard CBSE(Central Board of Secondary Education).For that you have to wait for a whole year which is bit difficult for you.


Positive side of waiting for whole year is you have a whole year to preparing yourself for your examination. You have no distraction or something which may causes your failure in the exams. In whole year you have to stay focused on your 12 standard examination for doing well in it. By this you get a highest marks as a comparison of others.


Believe in Yourself! You can make anything happen


All the very best.

Hello Student,

I appreciate your Interest in education. See the improvement is not restricted to one subject or multiple subjects  and  we cannot say if improvement in one subject in one year leads to improvement in more subjects in coming year.

You just need to have a revision of all subjects what you have completed in the school. have a revision and practice of subjects and concepts helps you better.

All the best.

Hi,

You just need to give the exams for the concerned two subjects in which you have got RT. There is no need to give exam for all of your subjects, you can just fill the form for the two subjects only.

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A block of mass 0.50 kg is moving with a speed of 2.00 ms-1 on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is

Option 1)

0.34\; J

Option 2)

0.16\; J

Option 3)

1.00\; J

Option 4)

0.67\; J

A person trying to lose weight by burning fat lifts a mass of 10 kg upto a height of 1 m 1000 times.  Assume that the potential energy lost each time he lowers the mass is dissipated.  How much fat will he use up considering the work done only when the weight is lifted up ?  Fat supplies 3.8×107 J of energy per kg which is converted to mechanical energy with a 20% efficiency rate.  Take g = 9.8 ms−2 :

Option 1)

2.45×10−3 kg

Option 2)

 6.45×10−3 kg

Option 3)

 9.89×10−3 kg

Option 4)

12.89×10−3 kg

 

An athlete in the olympic games covers a distance of 100 m in 10 s. His kinetic energy can be estimated to be in the range

Option 1)

2,000 \; J - 5,000\; J

Option 2)

200 \, \, J - 500 \, \, J

Option 3)

2\times 10^{5}J-3\times 10^{5}J

Option 4)

20,000 \, \, J - 50,000 \, \, J

A particle is projected at 600   to the horizontal with a kinetic energy K. The kinetic energy at the highest point

Option 1)

K/2\,

Option 2)

\; K\;

Option 3)

zero\;

Option 4)

K/4

In the reaction,

2Al_{(s)}+6HCL_{(aq)}\rightarrow 2Al^{3+}\, _{(aq)}+6Cl^{-}\, _{(aq)}+3H_{2(g)}

Option 1)

11.2\, L\, H_{2(g)}  at STP  is produced for every mole HCL_{(aq)}  consumed

Option 2)

6L\, HCl_{(aq)}  is consumed for ever 3L\, H_{2(g)}      produced

Option 3)

33.6 L\, H_{2(g)} is produced regardless of temperature and pressure for every mole Al that reacts

Option 4)

67.2\, L\, H_{2(g)} at STP is produced for every mole Al that reacts .

How many moles of magnesium phosphate, Mg_{3}(PO_{4})_{2} will contain 0.25 mole of oxygen atoms?

Option 1)

0.02

Option 2)

3.125 × 10-2

Option 3)

1.25 × 10-2

Option 4)

2.5 × 10-2

If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of a substance will

Option 1)

decrease twice

Option 2)

increase two fold

Option 3)

remain unchanged

Option 4)

be a function of the molecular mass of the substance.

With increase of temperature, which of these changes?

Option 1)

Molality

Option 2)

Weight fraction of solute

Option 3)

Fraction of solute present in water

Option 4)

Mole fraction.

Number of atoms in 558.5 gram Fe (at. wt.of Fe = 55.85 g mol-1) is

Option 1)

twice that in 60 g carbon

Option 2)

6.023 × 1022

Option 3)

half that in 8 g He

Option 4)

558.5 × 6.023 × 1023

A pulley of radius 2 m is rotated about its axis by a force F = (20t - 5t2) newton (where t is measured in seconds) applied tangentially. If the moment of inertia of the pulley about its axis of rotation is 10 kg m2 , the number of rotations made by the pulley before its direction of motion if reversed, is

Option 1)

less than 3

Option 2)

more than 3 but less than 6

Option 3)

more than 6 but less than 9

Option 4)

more than 9

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4 Jobs Available
Ethical Hacker

A career as ethical hacker involves various challenges and provides lucrative opportunities in the digital era where every giant business and startup owns its cyberspace on the world wide web. Individuals in the ethical hacker career path try to find the vulnerabilities in the cyber system to get its authority. If he or she succeeds in it then he or she gets its illegal authority. Individuals in the ethical hacker career path then steal information or delete the file that could affect the business, functioning, or services of the organization.

3 Jobs Available
GIS Expert

GIS officer work on various GIS software to conduct a study and gather spatial and non-spatial information. GIS experts update the GIS data and maintain it. The databases include aerial or satellite imagery, latitudinal and longitudinal coordinates, and manually digitized images of maps. In a career as GIS expert, one is responsible for creating online and mobile maps.

3 Jobs Available
Data Analyst

The invention of the database has given fresh breath to the people involved in the data analytics career path. Analysis refers to splitting up a whole into its individual components for individual analysis. Data analysis is a method through which raw data are processed and transformed into information that would be beneficial for user strategic thinking.

Data are collected and examined to respond to questions, evaluate hypotheses or contradict theories. It is a tool for analyzing, transforming, modeling, and arranging data with useful knowledge, to assist in decision-making and methods, encompassing various strategies, and is used in different fields of business, research, and social science.

3 Jobs Available
Geothermal Engineer

Individuals who opt for a career as geothermal engineers are the professionals involved in the processing of geothermal energy. The responsibilities of geothermal engineers may vary depending on the workplace location. Those who work in fields design facilities to process and distribute geothermal energy. They oversee the functioning of machinery used in the field.

3 Jobs Available
Database Architect

If you are intrigued by the programming world and are interested in developing communications networks then a career as database architect may be a good option for you. Data architect roles and responsibilities include building design models for data communication networks. Wide Area Networks (WANs), local area networks (LANs), and intranets are included in the database networks. It is expected that database architects will have in-depth knowledge of a company's business to develop a network to fulfil the requirements of the organisation. Stay tuned as we look at the larger picture and give you more information on what is db architecture, why you should pursue database architecture, what to expect from such a degree and what your job opportunities will be after graduation. Here, we will be discussing how to become a data architect. Students can visit NIT Trichy, IIT Kharagpur, JMI New Delhi

3 Jobs Available
Remote Sensing Technician

Individuals who opt for a career as a remote sensing technician possess unique personalities. Remote sensing analysts seem to be rational human beings, they are strong, independent, persistent, sincere, realistic and resourceful. Some of them are analytical as well, which means they are intelligent, introspective and inquisitive. 

Remote sensing scientists use remote sensing technology to support scientists in fields such as community planning, flight planning or the management of natural resources. Analysing data collected from aircraft, satellites or ground-based platforms using statistical analysis software, image analysis software or Geographic Information Systems (GIS) is a significant part of their work. Do you want to learn how to become remote sensing technician? There's no need to be concerned; we've devised a simple remote sensing technician career path for you. Scroll through the pages and read.

3 Jobs Available
Budget Analyst

Budget analysis, in a nutshell, entails thoroughly analyzing the details of a financial budget. The budget analysis aims to better understand and manage revenue. Budget analysts assist in the achievement of financial targets, the preservation of profitability, and the pursuit of long-term growth for a business. Budget analysts generally have a bachelor's degree in accounting, finance, economics, or a closely related field. Knowledge of Financial Management is of prime importance in this career.

4 Jobs Available
Data Analyst

The invention of the database has given fresh breath to the people involved in the data analytics career path. Analysis refers to splitting up a whole into its individual components for individual analysis. Data analysis is a method through which raw data are processed and transformed into information that would be beneficial for user strategic thinking.

Data are collected and examined to respond to questions, evaluate hypotheses or contradict theories. It is a tool for analyzing, transforming, modeling, and arranging data with useful knowledge, to assist in decision-making and methods, encompassing various strategies, and is used in different fields of business, research, and social science.

3 Jobs Available
Underwriter

An underwriter is a person who assesses and evaluates the risk of insurance in his or her field like mortgage, loan, health policy, investment, and so on and so forth. The underwriter career path does involve risks as analysing the risks means finding out if there is a way for the insurance underwriter jobs to recover the money from its clients. If the risk turns out to be too much for the company then in the future it is an underwriter who will be held accountable for it. Therefore, one must carry out his or her job with a lot of attention and diligence.

3 Jobs Available
Finance Executive
3 Jobs Available
Product Manager

A Product Manager is a professional responsible for product planning and marketing. He or she manages the product throughout the Product Life Cycle, gathering and prioritising the product. A product manager job description includes defining the product vision and working closely with team members of other departments to deliver winning products.  

3 Jobs Available
Operations Manager

Individuals in the operations manager jobs are responsible for ensuring the efficiency of each department to acquire its optimal goal. They plan the use of resources and distribution of materials. The operations manager's job description includes managing budgets, negotiating contracts, and performing administrative tasks.

3 Jobs Available
Stock Analyst

Individuals who opt for a career as a stock analyst examine the company's investments makes decisions and keep track of financial securities. The nature of such investments will differ from one business to the next. Individuals in the stock analyst career use data mining to forecast a company's profits and revenues, advise clients on whether to buy or sell, participate in seminars, and discussing financial matters with executives and evaluate annual reports.

2 Jobs Available
Researcher

A Researcher is a professional who is responsible for collecting data and information by reviewing the literature and conducting experiments and surveys. He or she uses various methodological processes to provide accurate data and information that is utilised by academicians and other industry professionals. Here, we will discuss what is a researcher, the researcher's salary, types of researchers.

2 Jobs Available
Welding Engineer

Welding Engineer Job Description: A Welding Engineer work involves managing welding projects and supervising welding teams. He or she is responsible for reviewing welding procedures, processes and documentation. A career as Welding Engineer involves conducting failure analyses and causes on welding issues. 

5 Jobs Available
Transportation Planner

A career as Transportation Planner requires technical application of science and technology in engineering, particularly the concepts, equipment and technologies involved in the production of products and services. In fields like land use, infrastructure review, ecological standards and street design, he or she considers issues of health, environment and performance. A Transportation Planner assigns resources for implementing and designing programmes. He or she is responsible for assessing needs, preparing plans and forecasts and compliance with regulations.

3 Jobs Available
Environmental Engineer

Individuals who opt for a career as an environmental engineer are construction professionals who utilise the skills and knowledge of biology, soil science, chemistry and the concept of engineering to design and develop projects that serve as solutions to various environmental problems. 

2 Jobs Available
Safety Manager

A Safety Manager is a professional responsible for employee’s safety at work. He or she plans, implements and oversees the company’s employee safety. A Safety Manager ensures compliance and adherence to Occupational Health and Safety (OHS) guidelines.

2 Jobs Available
Conservation Architect

A Conservation Architect is a professional responsible for conserving and restoring buildings or monuments having a historic value. He or she applies techniques to document and stabilise the object’s state without any further damage. A Conservation Architect restores the monuments and heritage buildings to bring them back to their original state.

2 Jobs Available
Structural Engineer

A Structural Engineer designs buildings, bridges, and other related structures. He or she analyzes the structures and makes sure the structures are strong enough to be used by the people. A career as a Structural Engineer requires working in the construction process. It comes under the civil engineering discipline. A Structure Engineer creates structural models with the help of computer-aided design software. 

2 Jobs Available
Highway Engineer

Highway Engineer Job Description: A Highway Engineer is a civil engineer who specialises in planning and building thousands of miles of roads that support connectivity and allow transportation across the country. He or she ensures that traffic management schemes are effectively planned concerning economic sustainability and successful implementation.

2 Jobs Available
Field Surveyor

Are you searching for a Field Surveyor Job Description? A Field Surveyor is a professional responsible for conducting field surveys for various places or geographical conditions. He or she collects the required data and information as per the instructions given by senior officials. 

2 Jobs Available
Orthotist and Prosthetist

Orthotists and Prosthetists are professionals who provide aid to patients with disabilities. They fix them to artificial limbs (prosthetics) and help them to regain stability. There are times when people lose their limbs in an accident. In some other occasions, they are born without a limb or orthopaedic impairment. Orthotists and prosthetists play a crucial role in their lives with fixing them to assistive devices and provide mobility.

6 Jobs Available
Pathologist

A career in pathology in India is filled with several responsibilities as it is a medical branch and affects human lives. The demand for pathologists has been increasing over the past few years as people are getting more aware of different diseases. Not only that, but an increase in population and lifestyle changes have also contributed to the increase in a pathologist’s demand. The pathology careers provide an extremely huge number of opportunities and if you want to be a part of the medical field you can consider being a pathologist. If you want to know more about a career in pathology in India then continue reading this article.

5 Jobs Available
Veterinary Doctor
5 Jobs Available
Speech Therapist
4 Jobs Available
Gynaecologist

Gynaecology can be defined as the study of the female body. The job outlook for gynaecology is excellent since there is evergreen demand for one because of their responsibility of dealing with not only women’s health but also fertility and pregnancy issues. Although most women prefer to have a women obstetrician gynaecologist as their doctor, men also explore a career as a gynaecologist and there are ample amounts of male doctors in the field who are gynaecologists and aid women during delivery and childbirth. 

4 Jobs Available
Audiologist

The audiologist career involves audiology professionals who are responsible to treat hearing loss and proactively preventing the relevant damage. Individuals who opt for a career as an audiologist use various testing strategies with the aim to determine if someone has a normal sensitivity to sounds or not. After the identification of hearing loss, a hearing doctor is required to determine which sections of the hearing are affected, to what extent they are affected, and where the wound causing the hearing loss is found. As soon as the hearing loss is identified, the patients are provided with recommendations for interventions and rehabilitation such as hearing aids, cochlear implants, and appropriate medical referrals. While audiology is a branch of science that studies and researches hearing, balance, and related disorders.

3 Jobs Available
Oncologist

An oncologist is a specialised doctor responsible for providing medical care to patients diagnosed with cancer. He or she uses several therapies to control the cancer and its effect on the human body such as chemotherapy, immunotherapy, radiation therapy and biopsy. An oncologist designs a treatment plan based on a pathology report after diagnosing the type of cancer and where it is spreading inside the body.

3 Jobs Available
Anatomist

Are you searching for an ‘Anatomist job description’? An Anatomist is a research professional who applies the laws of biological science to determine the ability of bodies of various living organisms including animals and humans to regenerate the damaged or destroyed organs. If you want to know what does an anatomist do, then read the entire article, where we will answer all your questions.

2 Jobs Available
Actor

For an individual who opts for a career as an actor, the primary responsibility is to completely speak to the character he or she is playing and to persuade the crowd that the character is genuine by connecting with them and bringing them into the story. This applies to significant roles and littler parts, as all roles join to make an effective creation. Here in this article, we will discuss how to become an actor in India, actor exams, actor salary in India, and actor jobs. 

4 Jobs Available
Acrobat

Individuals who opt for a career as acrobats create and direct original routines for themselves, in addition to developing interpretations of existing routines. The work of circus acrobats can be seen in a variety of performance settings, including circus, reality shows, sports events like the Olympics, movies and commercials. Individuals who opt for a career as acrobats must be prepared to face rejections and intermittent periods of work. The creativity of acrobats may extend to other aspects of the performance. For example, acrobats in the circus may work with gym trainers, celebrities or collaborate with other professionals to enhance such performance elements as costume and or maybe at the teaching end of the career.

3 Jobs Available
Video Game Designer

Career as a video game designer is filled with excitement as well as responsibilities. A video game designer is someone who is involved in the process of creating a game from day one. He or she is responsible for fulfilling duties like designing the character of the game, the several levels involved, plot, art and similar other elements. Individuals who opt for a career as a video game designer may also write the codes for the game using different programming languages.

Depending on the video game designer job description and experience they may also have to lead a team and do the early testing of the game in order to suggest changes and find loopholes.

3 Jobs Available
Radio Jockey

Radio Jockey is an exciting, promising career and a great challenge for music lovers. If you are really interested in a career as radio jockey, then it is very important for an RJ to have an automatic, fun, and friendly personality. If you want to get a job done in this field, a strong command of the language and a good voice are always good things. Apart from this, in order to be a good radio jockey, you will also listen to good radio jockeys so that you can understand their style and later make your own by practicing.

A career as radio jockey has a lot to offer to deserving candidates. If you want to know more about a career as radio jockey, and how to become a radio jockey then continue reading the article.

3 Jobs Available
Choreographer

The word “choreography" actually comes from Greek words that mean “dance writing." Individuals who opt for a career as a choreographer create and direct original dances, in addition to developing interpretations of existing dances. A Choreographer dances and utilises his or her creativity in other aspects of dance performance. For example, he or she may work with the music director to select music or collaborate with other famous choreographers to enhance such performance elements as lighting, costume and set design.

2 Jobs Available
Social Media Manager

A career as social media manager involves implementing the company’s or brand’s marketing plan across all social media channels. Social media managers help in building or improving a brand’s or a company’s website traffic, build brand awareness, create and implement marketing and brand strategy. Social media managers are key to important social communication as well.

2 Jobs Available
Photographer

Photography is considered both a science and an art, an artistic means of expression in which the camera replaces the pen. In a career as a photographer, an individual is hired to capture the moments of public and private events, such as press conferences or weddings, or may also work inside a studio, where people go to get their picture clicked. Photography is divided into many streams each generating numerous career opportunities in photography. With the boom in advertising, media, and the fashion industry, photography has emerged as a lucrative and thrilling career option for many Indian youths.

2 Jobs Available
Producer

An individual who is pursuing a career as a producer is responsible for managing the business aspects of production. They are involved in each aspect of production from its inception to deception. Famous movie producers review the script, recommend changes and visualise the story. 

They are responsible for overseeing the finance involved in the project and distributing the film for broadcasting on various platforms. A career as a producer is quite fulfilling as well as exhaustive in terms of playing different roles in order for a production to be successful. Famous movie producers are responsible for hiring creative and technical personnel on contract basis.

2 Jobs Available
Copy Writer

In a career as a copywriter, one has to consult with the client and understand the brief well. A career as a copywriter has a lot to offer to deserving candidates. Several new mediums of advertising are opening therefore making it a lucrative career choice. Students can pursue various copywriter courses such as Journalism, Advertising, Marketing Management. Here, we have discussed how to become a freelance copywriter, copywriter career path, how to become a copywriter in India, and copywriting career outlook. 

5 Jobs Available
Vlogger

In a career as a vlogger, one generally works for himself or herself. However, once an individual has gained viewership there are several brands and companies that approach them for paid collaboration. It is one of those fields where an individual can earn well while following his or her passion. 

Ever since internet costs got reduced the viewership for these types of content has increased on a large scale. Therefore, a career as a vlogger has a lot to offer. If you want to know more about the Vlogger eligibility, roles and responsibilities then continue reading the article. 

3 Jobs Available
Publisher

For publishing books, newspapers, magazines and digital material, editorial and commercial strategies are set by publishers. Individuals in publishing career paths make choices about the markets their businesses will reach and the type of content that their audience will be served. Individuals in book publisher careers collaborate with editorial staff, designers, authors, and freelance contributors who develop and manage the creation of content.

3 Jobs Available
Journalist

Careers in journalism are filled with excitement as well as responsibilities. One cannot afford to miss out on the details. As it is the small details that provide insights into a story. Depending on those insights a journalist goes about writing a news article. A journalism career can be stressful at times but if you are someone who is passionate about it then it is the right choice for you. If you want to know more about the media field and journalist career then continue reading this article.

3 Jobs Available
Editor

Individuals in the editor career path is an unsung hero of the news industry who polishes the language of the news stories provided by stringers, reporters, copywriters and content writers and also news agencies. Individuals who opt for a career as an editor make it more persuasive, concise and clear for readers. In this article, we will discuss the details of the editor's career path such as how to become an editor in India, editor salary in India and editor skills and qualities.

3 Jobs Available
Reporter

Individuals who opt for a career as a reporter may often be at work on national holidays and festivities. He or she pitches various story ideas and covers news stories in risky situations. Students can pursue a BMC (Bachelor of Mass Communication), B.M.M. (Bachelor of Mass Media), or MAJMC (MA in Journalism and Mass Communication) to become a reporter. While we sit at home reporters travel to locations to collect information that carries a news value.  

2 Jobs Available
Corporate Executive

Are you searching for a Corporate Executive job description? A Corporate Executive role comes with administrative duties. He or she provides support to the leadership of the organisation. A Corporate Executive fulfils the business purpose and ensures its financial stability. In this article, we are going to discuss how to become corporate executive.

2 Jobs Available
Multimedia Specialist

A multimedia specialist is a media professional who creates, audio, videos, graphic image files, computer animations for multimedia applications. He or she is responsible for planning, producing, and maintaining websites and applications. 

2 Jobs Available
Welding Engineer

Welding Engineer Job Description: A Welding Engineer work involves managing welding projects and supervising welding teams. He or she is responsible for reviewing welding procedures, processes and documentation. A career as Welding Engineer involves conducting failure analyses and causes on welding issues. 

5 Jobs Available
QA Manager
4 Jobs Available
Quality Controller

A quality controller plays a crucial role in an organisation. He or she is responsible for performing quality checks on manufactured products. He or she identifies the defects in a product and rejects the product. 

A quality controller records detailed information about products with defects and sends it to the supervisor or plant manager to take necessary actions to improve the production process.

3 Jobs Available
Production Manager
3 Jobs Available
Product Manager

A Product Manager is a professional responsible for product planning and marketing. He or she manages the product throughout the Product Life Cycle, gathering and prioritising the product. A product manager job description includes defining the product vision and working closely with team members of other departments to deliver winning products.  

3 Jobs Available
QA Lead

A QA Lead is in charge of the QA Team. The role of QA Lead comes with the responsibility of assessing services and products in order to determine that he or she meets the quality standards. He or she develops, implements and manages test plans. 

2 Jobs Available
Structural Engineer

A Structural Engineer designs buildings, bridges, and other related structures. He or she analyzes the structures and makes sure the structures are strong enough to be used by the people. A career as a Structural Engineer requires working in the construction process. It comes under the civil engineering discipline. A Structure Engineer creates structural models with the help of computer-aided design software. 

2 Jobs Available
Process Development Engineer

The Process Development Engineers design, implement, manufacture, mine, and other production systems using technical knowledge and expertise in the industry. They use computer modeling software to test technologies and machinery. An individual who is opting career as Process Development Engineer is responsible for developing cost-effective and efficient processes. They also monitor the production process and ensure it functions smoothly and efficiently.

2 Jobs Available
QA Manager
4 Jobs Available
AWS Solution Architect

An AWS Solution Architect is someone who specializes in developing and implementing cloud computing systems. He or she has a good understanding of the various aspects of cloud computing and can confidently deploy and manage their systems. He or she troubleshoots the issues and evaluates the risk from the third party. 

4 Jobs Available
Azure Administrator

An Azure Administrator is a professional responsible for implementing, monitoring, and maintaining Azure Solutions. He or she manages cloud infrastructure service instances and various cloud servers as well as sets up public and private cloud systems. 

4 Jobs Available
Computer Programmer

Careers in computer programming primarily refer to the systematic act of writing code and moreover include wider computer science areas. The word 'programmer' or 'coder' has entered into practice with the growing number of newly self-taught tech enthusiasts. Computer programming careers involve the use of designs created by software developers and engineers and transforming them into commands that can be implemented by computers. These commands result in regular usage of social media sites, word-processing applications and browsers.

3 Jobs Available
Product Manager

A Product Manager is a professional responsible for product planning and marketing. He or she manages the product throughout the Product Life Cycle, gathering and prioritising the product. A product manager job description includes defining the product vision and working closely with team members of other departments to deliver winning products.  

3 Jobs Available
Information Security Manager

Individuals in the information security manager career path involves in overseeing and controlling all aspects of computer security. The IT security manager job description includes planning and carrying out security measures to protect the business data and information from corruption, theft, unauthorised access, and deliberate attack 

3 Jobs Available
ITSM Manager
3 Jobs Available
Automation Test Engineer

An Automation Test Engineer job involves executing automated test scripts. He or she identifies the project’s problems and troubleshoots them. The role involves documenting the defect using management tools. He or she works with the application team in order to resolve any issues arising during the testing process. 

2 Jobs Available
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