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NCERT Solutions For Class 10 Science Chapter 3 Metals and Non-metals

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NCERT Solutions For Class 10 Science Chapter 3 Metals and Non-metals

Edited By Irshad Anwar | Updated on Oct 08, 2023 10:27 AM IST

NCERT Solutions for Class 10 Science Chapter 3 "Metals and Non-metals"

NCERT Solutions For Class 10 Science Chapter 3 - Metals and Non Metals is prepared by the experienced subject experts as per the NCERT Textbook for Class 10. Students can easily score well by practicing the questions with the help of Metals and Non Metals Class 10 Science Chapter 3 NCERT solutions. The NCERT Solutions provide answers to all the exercise questions as well as to the questions mentioned in between the chapter. Along with board exams, these NCERT Solutions for Class 10 will help you to crack competitive exams such as JEE, NEET, KVPY, NTSE, etc. and Metals and Non Metals Class 10 Solutions will also help you to complete your homework and assignments. The NCERT Solutions for Class 10 Science Chapter 3: Metals and Non Metals are created to help you to clear your concepts and doubts related to the chapter. The solutions provided in this article are based on the CBSE syllabus for Class 10 Science.

Metals and nonmetals class 10: The Chapter-wise NCERT Solutions for Class 10 Science have been updated as per the latest CBSE Science class 10 syllabus and guidelines. The language used is easy to understand in order to help students receive the highest possible marks on the CBSE Class 10 exams. Candidates can consult the Class 10 Science Chapter 3 Notes below if they are looking for NCERT Solutions for Class 10 Science Chapter 3 Metals and Non Metals questions and answers. To assist you in performing well on the Class 10 Science Exam, we have included all the crucial questions from Metals and Non Metals that correspond to your Chapter 3 Science Class 10 notes.

NCERT Solutions for Class 10 Science Chapter 3 Metals and Non metals

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NCERT solutions for class 10 science chapter 3 - Metals and Non-Metals (Intest Questions and Exercise)

Class 10 Science Ch 3 question answer for all intext questions and chapter-end exercise are given below :

Metal and Non Metals Class 10 Questions and Answers (Topic-wise)

Topic 3.1 - Physical Properties

Q.1. (i) Give an example of a metal which is a liquid at room temperature.

Answer:

Generally, metals are solid at room temperature as they have a strong metallic bond that binds them close.

But mercury is a metal which exists as a liquid metal at room temperature.

Q.1. (ii) Give an example of a metal which can be easily cut with a knife .

Answer:

Metal is generally hard in nature due to its metallic bond between each other. But sodium is a metal which is so soft that it can even be cut with a knife.

Q.1. (iii) Give an example of a metal which is the best conductor of heat.

Answer:

Most of the metals are a good conductor of heat and electricity but silver is considered the best conductor of heat and electricity among them (gold and copper are also very good conductors).


Q.1. (iv) Give an example of a metal which is a poor conductor of heat.

Answer:

Generally, metals are considered a good conductor of heat and electricity. But mercury and lead show slight exception as they are a poor conductors of heat.

Q.2. Explain the meanings of malleable and ductile.

Answer:

Malleable substances are the substance which can be beaten in order to convert them into sheets. Generally, all metals are considered to be malleable in nature.

For example silver, iron, etc. Gold has the highest malleable property as one single gram of gold can be beaten into a sheet of 1 square meter.

Ductile substances are substances which can be drawn into wires. All the metals like gold, copper are dectile in nature. Moreover, the wires for transfer of electricity are made of copper.

NCERT free solutions for class 10 science chapter 3 Metals and Non-Metals

Topic 3.2: Chemical properties of metals

Q.1. Why is sodium kept immersed in kerosene oil?

Answer:

Sodium is a very reactive metal. It reacts rapidly with the oxygen and thus cannot be kept in air as it will explode. So it is better to store in a liquid.

Further the density of sodium is less than that of water so it will float on the surface. So water is not a good solvent for the purpose. So sodium is kept in kerosene oil.

Q.2. (i) Write equations for the reactions of iron with steam

Answer:

Iron reacts with steam and forms iron oxide. The reaction is shown below : 1644210726195

Q.2. (ii) Write equations for the reactions of calcium and potassium with water

Answer:

Calcium and potassium react with water to give their respective hydroxides. The reactions are shown below :

1644210757996

1644210782263

Q.3. (i) Samples of four metals A, B, C and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows.

Use the Table above to answer the following question about metals A, B, C and D.

(i) Which is the most reactive metal?

Metal Iron (II) sulphate Copper (II) sulphate Zinc sulphate Silver nitrate
A No reaction Displacement

B Displacement
No reaction
C No reaction No reaction No reaction Displacement
D No reaction No reaction No reaction No reaction

Answer: From the table, it can be seen that no metal is able to displace zinc from its solution thus zinc is most rection among given metals. Further, only metal B is able to displace iron from iron sulphate solution. And element A can displace copper. Similarly, element C can displace silver from its solution.

So the reactivity order obtained is : D < C < A < B

Hence B is most reactive.

Q.3. (ii) Samples of four metals A, B, C and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows.

Use the Table above to answer the following questions about metals A, B, C and D.

(ii) What would you observe if B is added to a solution of Copper(II) sulphate?

Metal Iron (II) sulphate Copper (II) sulphate Zinc sulphate Silver nitrate
A No reaction Displacement

B Displacement
No reaction
C No reaction No reaction No reaction Displacement
D No reaction No reaction No reaction No reaction

Answer:

As we have seen part (a) that element A can displace copper from its solution. Also, B is more reactive than element A.

So element B will also displace copper from copper sulphate solution.

Question:

Q.3. (iii) Samples of four metals A, B, C, and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows.

Use the table above to answer the following question about metals A, B, C, and D.

(iii) Arrange the metals A, B, C, and D in the order of decreasing reactivity .

Metal Iron (II) sulphate Copper (II) sulphate Zinc sulphate Silver nitrate
A No reaction Displacement

B Displacement
No reaction
C No reaction No reaction No reaction Displacement
D No reaction No reaction No reaction No reaction


Answer:

As stated in part (a):-

No metal is able to displace zinc from its solution thus zinc is most rection among given metals.

Further, only metal B is able to displace iron from iron sulphate solution. And element A can displace copper. Similarly, element C can displace silver from its solution.

So the reactivity order obtained is : D < C < A < B

Q.4. Which gas is produced when dilute hydrochloric acid is added to a reactive metal? Write the chemical reaction when iron reacts with diluteH_{2}SO_{4} .

Answer:

In the case when dilute hydrochloric acid is added to a reactive metal we obtain hydrogen gas. The reaction when suphuric acid reacts a reactive metal is shown below : 1644210827338

In this reaction, we obtain iron suphate solution with release of hydrogen gas.

Q.5. What would you observe when zinc is added to a solution of iron(II) sulphate? Write the chemical reaction that takes place.

Answer:

By reactivity, we know that zinc is more reactive than iron. Thus zinc will displace iron from the iron sulphate solution and form zinc sulphate. The reaction is shown below:- 1644210848660

NCERT solutions for Class 10 Chapter 3 Science

Topic- 3.3: How do metals and non-metals react?

Q.1. (i) Write the electron-dot structures for sodium, oxygen, and magnesium.

Answer:

The electron dot structure for sodium, oxygen, and magnesium is shown below:-


1644210891197 1644210890498 1644210890818

Q.1. (ii) Show the formation of and by the transfer of electrons.

Answer:

The formation of Na 2 O and MgO is shown below:-

1644210950618

1644210912099

Q.1. (iii) What are the ions present in and compounds?

Answer:

In N\! a_{2}O the ions present are Na + and O 2- , whereas in M\! gO the ions are Mg 2+ and O 2- .

Q.2. Why do ionic compounds have high melting points?

Answer:

The ionic compounds have a very strong electrostatic force of attraction. To overcome these force very high energy is needed. Thus it is generally seen that the melting point of ionic compounds is quite high.

CBSE NCERT solutions for class 10 science chapter 2 Metals and Non- Metals

Topic-3.4: Occurrence of metals

Q.1. (i) Define the following terms - Mineral .

Answer:

In nature, the elements are present in a combined state known as minerals. Minerals may be defined as the solid chemical compound that occurs naturally in pure form. The chemical composition of minerals is said to the same throughout.

Q.1. (ii) Define the following terms- Ore .

Answer:

Ores are defined as the minerals which can be extracted to make profits. Only economically extractable elements (generally metals) are considered to be ores.

Q.1. (iii) Define the following term- Gangue.

Answer:

Gangue is the impurities present in the ores such as sand, silt soil. To make the element efficient and more useful, we need to remove the gangue from the ores.

Q.2. Name two metals which are found in nature in the free state .

Answer:

The metals which are very low reactive elements may be found in free states. Two such metals are gold and silver . These metals are so unreactive that they don't form any oxides, peroxides or sulphides.

Q.3. What chemical process is used for obtaining a metal from its oxide?

Answer:

We can obtain metal from its oxide by using the reduction process. The metal oxides are reduced using reducing agents such as highly reactive metals so that they can displace the metal from its oxide.

For e.g . From zinc oxide, we can get zinc by using reducing agent carbon.

ZnO\ +\ C\ \rightarrow \ Zn\ +\ CO

NCERT Solutions for Class 10 Science Ch 3:

Topic 3.5 Corrosion

Q.1. Metallic oxides of zinc, magnesium, and copper were heated with the following metals

In which cases will you find displacement reactions taking place?

Metal Zinc Magnesium Copper
Zinc oxide


Magnesium oxide


Copper oxide


Answer:

The reactivity order of the given elements are: Mg > Zn > Cu

Thus the following result is observed :

Metal Zinc Magnesium Copper
Zinc oxide No reaction Displacement No reaction
Magnesium oxide No reaction No reaction No reaction
Copper oxide Displacement Displacement No reaction

Q.2. Which metals do not corrode easily?

Answer:

The low reactive metals such as gold don't corrode easily whereas highly reactive elements are very easily corroded. This is why these metals (highly reactive) are given gold plating in order to protect them from corrosion.

Q.3. What are alloys?

Answer:

Alloys are defined as the homogeneous mixture of two or more than two elements. Alloys are prepared to give specific features of all the constituent elements. It is prepared by melting one metal and then diffusing other into.

For example: steel is an alloy of iron and carbon.

NCERT solutions for class 10 science chapter 3 Metals and Non-Metals Exercise Solutions:

Q.1. Which of the following pairs will give displacement reactions?

a) NaCl solution and copper metal

b) MgCl_{2} solution and aluminum metal

c) FeSO_{4} solution and silver metal

d) AgNO_{3} solution and copper metal

Answer:

(d) AgNO_{3} solution and copper metal.

In all other options, the solution metal is more reactive than the given metal.

For e.g . in (b) MgCl_{2} solution and aluminum metal, Mg metal is more reactive than aluminum thus reactive will not take place.

Q.2. Which of the following methods is suitable for preventing an iron frying pan from rusting?

(a) Applying grease
(b) Applying paint
(c) Applying a coating of zinc
(d) All of the above.

Answer:

(c) Applying a coating of zinc

It will be most suitable method to prevent it. Paint and grease can also be applied but these are not suitable methods as the pan will be heated and washed again and again.

Q.3. An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be

(a) calcium
(b) carbon
(c) silicon
(d) iron.

Answer:

The element is Calcium. As calcium oxide is soluble in water and has a high melting point.

Q.4. Food cans are coated with tin and not with zinc because

(a) zinc is costlier than tin.
(b) zinc has a higher melting point than tin.
(c) zinc is more reactive than tin.
(d) zinc is less reactive than tin.

Answer:

This is because zinc is more reactive than tin. So zinc may react with food items and make food unhealthy to consume.

Q.5. (a) You are given a hammer, a battery, a bulb, wires, and a switch.

How could you use them to distinguish between samples of metals and non-metals?

Answer:

To distinguish between metals and non-metals we can use two properties of metals:-

(i) Most of the metals are malleable i.e., they can be converted into sheets. So with the help of a hammer, we can test and distinguish.

(ii) Metals are a good conductor of electricity whereas non-metals are poor conductors.

Q.5. (b) You are given a hammer, a battery, a bulb, wires, and a switch.

Assess the usefulness of these tests in distinguishing between metals and non-metals.

Answer:

These are useful as there is no chemical reaction involved in identifying the metals and non-metals. These are just the physical test which can be carried out at any level. As in the first test, the hammer is easily available at home. And in the second test, we have use wires which are easily available in the market.

Class 10 Metal and Non Metal Question Answer

Q.6. What are amphoteric oxides? Give two examples of amphoteric oxides.

Answer:

Amphoteric oxides are those oxides of metals that behave in both acidic and basic manner. These oxides react with acids and bases to produce salt and water as the major products. E.g. Aluminium oxide (Al 2 O 3 ), Zinc oxide (ZnO).

Q.7. Name two metals which will displace hydrogen from dilute acids, and two metals which will not .

Answer:

Clearly, the metals which are more reactive than hydrogen will displace it from the dilute acids.

For e.g. potassium and sodium. But metals like silver and gold are less reactive than hydrogen so they will not be able to displace hydrogen.

Q.8. In the electrolytic refining of a metal M, what would you take as the anode, the cathode and the electrolyte?

Answer:

The configuration for electrolytic refining will be:-

Electrolyte:- Salt solution of metal M

Anode:- Impure metal M

Cathode:- Pure metal M (Thin strips)

Q9.(a) Pratyush took sulphur powder on a spatula and heated it. He collected the gas evolved by inverting a test tube over it, as shown in the figure below.

What will be the action of gas on dry litmus paper?

1644211017080 Answer:

In the given procedure sulphur dioxide is formed.

(i) Thus gas (sulphur dioxide) has no effect on dry litmus paper.

(ii) SO 2 converts moist blue litmus paper to red due to the formation of sulphurous acid. (as sulphur dioxide reacts with moisture to produce acid).

Q.9.(b) Pratyush took sulphur powder on a spatula and heated it. He collected the gas evolved by inverting a test tube over it, as shown in the figure below.

Write a balanced chemical equation for the reaction taking place.

1644211039163 Answer:

In the reaction, sulphur dioxide is formed. The chemical reaction is shown below:-

S\ +\ O_2\ \rightarrow \ =\ SO_2 (g)

Q10. State two ways to prevent the rusting of iron.

Answer:

The two ways to prevent rusting of iron is:-

(a) By making alloys of the elements.

(b) By using the electroplating method such as galvanization.

Q.11. What type of oxides are formed when non-metals combine with oxygen?

Answer:

When non-metals combine with the oxygen they form acidic oxides.

For e.g. SO 2 is an acidic oxide formed when sulphur combines with oxygen.

Q.12.(a) Give reasons:

Platinum, gold, and silver are used to make jewellery.

Answer:

There are three main reasons for why platinum, gold, and silver are used to make jewellery :-

(i) They are lustrous in nature.

(ii) They are very low reactive elements, thus they don't corrode easily.

(iii) They are found in low quantity so that makes them costly and not available for all. Hence these are used as a sign to show status in society.

Q.12. (b) Give reasons:

Sodium, potassium, and lithium are stored under oil.

Answer:

The elements like sodium, potassium, and lithium are very reactive metals. They react with oxygen vigorously and thus are dangerous to keep them in contact with air and moisture. Hence they are generally kept under oil.

Q.12. (c) Give reasons:

Aluminum is a highly reactive metal, yet it is used to make utensils for cooking.

Answer:

This is true that aluminum is a highly reactive element but it has a property of non-corrosion. That's why it is used to make cooking utensils. The property comes from the fact that aluminum reacts with oxygen and forms a thin layer of aluminum oxide which acts as a protective coating layer to resist further corrosion.

Q.12. (d) Give reasons:

Carbonate and sulphide ores are usually converted into oxides during the process of extraction.

Answer:

This is because the extraction of metal is easier from their oxides rather than their carbonates or sulphides. As in case of oxides we have to simply use a metal more reactive than the impure metal which needs to be extracted.

Q.13. You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. Explain why these sour substances are effective in cleaning the vessels.

Answer:

The lemon and tamarind contains citric acid which neutralizes the basic carbon carbonate and thus dissolves the greenish layer. This is why lemon juice and tamarind is used to clean tarnished copper vessels.

Q.14. Differentiate between metal and non-metal on the basis of their chemical properties.

Answer:

The major differences between metals and non-metals are given below:-

Metals Non-metals
1. They have ionic bonds. They have covalent bonds
2. They are electropositive. They are electronegative.
3. They form basic oxides. They form acidic oxides.
4. They react with dilute acids to form salt and evolve hydrogen gas. Since they cannot replace hydrogen thus they cannot react with dilute acids.

Q.15. A man went door to door posing as a goldsmith. He promised to bring back the glitter of old and dull gold ornaments. An unsuspecting lady gave a set of gold bangles to him which he dipped in a particular solution. The bangles sparkled like new but their weight was reduced drastically. The lady was upset but after a futile argument, the man beat a hasty retreat. Can you play the detective to find out the nature of the solution he had used?

Answer:

The solution man used must be aqua regia. It is a solution of a 3:1 mixture of conc. HCl and conc. HNO 3 . It has the property that gold dissolves in this solution.

After dipping the gold in the solution, the outer layer of gold dissolves and the new surface is exposed which appears to be shiny. This is why the weigth of ornament is decreased.

Q.16 . Give reasons why copper is used to make hot water tanks and not steel (an alloy of iron).

Answer:

This is because steel contains iron which reacts with steam and forms iron oxide. Whereas copper doesn't react with cold water, hot water and steam.

That's why hot water tanks are made up of copper, not steel.

3Fe\ +\ 4H_2O\ \rightarrow \ Fe_3O_4\ +\ 4H_2O


The NCERT textbook for Class 10 Science, which is required in CBSE schools in India, is the source of Chapter 3 Metals and Non Metals. These CBSE Class 10 Science Chapter 3 question answer will assist you not only in preparing for your Class 10 exam but also in passing other competitive exams. For more information on Class 10th Science Chapter 3 question answer, continue reading.

Chapter 3 Science Class 10: Important Formulas and Diagrams + eBook link

Chapter 3: Metals and Non-metals

Important Reactions

Metal + Oxygen → Metal oxide

For example: 2Cu (Copper) + O2 → 2CuO (Copper(II) oxide)

Aluminium oxide reacts in the following manner with acids and bases:

Al2O3 + 6HCl → 2AlCl3 + 3H2O

Al2O3 + 2NaOH → 2NaAlO2 (Sodium aluminate) + H2O

Sodium oxide and potassium oxide dissolve in water to produce alkalis as follows:

Na2O(s) + H2O(l) → 2NaOH(aq)

K2O(s) + H2O(l) → 2KOH(aq)

Metal + Water → Metal oxide + Hydrogen

Example: 2Al(s) + 3H2O(g) → Al 2O3(s) + 3H2(g)

Metal oxide + Water → Metal hydroxide

Example: 2K(s) + 2H2O(l) → 2KOH(aq) + H2(g) + heat energy

Metal + Dilute acid → Salt + Hydrogen

Metal A + Salt solution of B → Salt solution of A + Metal B

Reactivity series

1690000318099

1690000317692

For more, Download Ebook - NCERT Class 10 Science: Chapterwise Important Formulas, Diagrams, And Points

Metals and nonmetals Class 10 - Important Topics of NCERT Textbook

Chapter 3 Chemistry class 10: Let us take a look at the topics and subtopics covered by the NCERT solutions for Class 10 Science Chapter 3 Notes for Metals and Non-Metals before diving into the NCERT Solutions for Class 10 Science Chapter 3 answers.

-Physical Properties of Metals And Non-Metals

-Chemical Properties Of Metals

  • What happens when metals are burnt in air?
  • What happens when metals react with water?
  • What happens when metals react with acids?
  • How do metals react with solutions of other Metal Salts
  • The Reactivity Series

-How do Metals and Non-Metals react?

  • Properties of Ionic Compounds

-Occurrence of metals

  • Extraction of metals
  • Enrichment of Ores
  • Extracting Metals Low in the Activity Series
  • Extracting Metals in the Middle of the activities Series
  • Extracting Metals towards the top of the Activity Series
  • Refining of Metals

-Corrosion

  • Prevention of Corrosion

Free download NCERT Solutions for Class 10 Science Chapter 3 Metals and Non-Metals PDF for CBSE exam.

NCERT Solutions for Class 10th Science - Chapterwise


Things you will get to know through NCERT Class 10 Science Solutions chapter 3 Metals and Non-Metals:

  • Using NCERT exemplar class 10 Maths chapter 3 solutions, students will know that the metals are shiny, easily pliable, ductile and are good conductors of heat and electricity.
  • Through Class 10 Science Chapter 3 question answer, you will get to know that Metals are solids at room temperature, except mercury which is a liquid. By losing electrons to non-metals, they can form positive ions.
  • Ch 3 Science Class 10: Metals combine with oxygen to form basic oxides. Aluminum oxide and zinc oxide show the properties of both basic as well as acidic oxides. These oxides are known as amphoteric oxides. Different metals have different reactivities with water and dilute acids.
  • Through NCERT solutions for class 10 science chapter 3 Metals and Non-Metals, students will study that a list of common metals arranged in order of their decreasing reactivity is known as an activity series.
  • Non-metals have properties opposite to that of metals. Non-metals are neither malleable nor ductile.
  • In Metals and Non metals Class 10 Solutions, student will study about conduction of heat and electricity. Except for graphite which conducts electricity, other non-metals are bad conductors of heat and electricity.
  • When reacting with metals, non-metals form negatively charged ions by gaining electrons. They form oxides that are either acidic or neutral.
  • They do not displace hydrogen from dilute acids. They react with hydrogen to form hydrides.

Highlights of NCERT Solutions for Class 10 Science Chapter 3 – Metals and Non-Metals

The highlight for the Class 10 Science Chapter 3 Solution PDF are given below:

  • The NCERT (CBSE) Syllabus and Books are strictly followed in the class 10 science chapter 3 solutions.
  • The class 10 metals and nonmetals solutions are easy-to-understand and comprehensive
  • On this page, you will find clear and concise concepts of science class 10 chapter 3 and metals and non metals class 10 question answer.
  • The solutions given for class 10 science ch 3 help clear doubt and give in-depth knowledge of concepts.
  • The ncert solutions class 10 science chapter 3 are prepared by subject matter experts in the easiest possible way.
  • All the exercise questions and in-text solved questions are available for science chapter 3 class 10.

Benefits of NCERT solutions for class 10 science chapter 3 Metals and Non-Metals:

The key benefits of Metals and nonmetals Class 10 solution PDF are listed below:

  • Class 10 Physics NCERT exemplar solutions chapter 3 provided in this article are easy to understand.
  • NCERT solutions for class 10 Science provided here for chapter 3 metals and non-metals can help you to score well in the CBSE board exam for class 10 science.
  • You can also find exercise questions and intext questions in the same place for Metals and Non metals Class 10 NCERT Solutions.
  • Step by step NCERT Exemplar Solutions for ch 3 science class 10 are provided by the experts if you have any doubt you can ask them directly.
  • Metals and non metals class 10 question answer include diagrams wherever required for a better understanding.

  • Download NCERT Solutions For Class 10 Science Chapter 3 Metals and Non-metals PDF for better experience.

Also, checkAlso Check NCERT Books and NCERT Syllabus here:

Frequently Asked Question (FAQs)

1. Does CBSE provide the solutions of NCERT class 10?

No, CBSE doesn’t provide NCERT solutions of NCERT Class 10. Students can get the solutions from Careers360 website. Solutions to NCERT book questions are given. The chapter wise table provided above redirect to the respective chapter.

2. What are the important topics of NCERT solutions for class 10 science chapter 3 Metals and Non-Metals?
  • Properties of Metals and Non-Metals: Physical & Chemical

  • Formation and Properties of Ionic Compounds (NaCl, MgCl2),

  • Basic Terms Used in Metallurgy: Calcination, Roasting etc.

  • Activity Series

  • Corrosion and its prevention

3. Where can I find the complete solutions of NCERT class 10 Science?
4. What is the weightage of chapter Metals and Non-metals in CBSE class 10 board final exam?

Around 7 marks questions are asked from this chapter in the CBSE Board exam. Practice problems using previous year CBSE board exam papers and also students can get more questions from the NCERT exemplar.

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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

Bio Medical Engineer

The field of biomedical engineering opens up a universe of expert chances. An Individual in the biomedical engineering career path work in the field of engineering as well as medicine, in order to find out solutions to common problems of the two fields. The biomedical engineering job opportunities are to collaborate with doctors and researchers to develop medical systems, equipment, or devices that can solve clinical problems. Here we will be discussing jobs after biomedical engineering, how to get a job in biomedical engineering, biomedical engineering scope, and salary. 

4 Jobs Available
Data Administrator

Database professionals use software to store and organise data such as financial information, and customer shipping records. Individuals who opt for a career as data administrators ensure that data is available for users and secured from unauthorised sales. DB administrators may work in various types of industries. It may involve computer systems design, service firms, insurance companies, banks and hospitals.

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
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
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
Geotechnical engineer

The role of geotechnical engineer starts with reviewing the projects needed to define the required material properties. The work responsibilities are followed by a site investigation of rock, soil, fault distribution and bedrock properties on and below an area of interest. The investigation is aimed to improve the ground engineering design and determine their engineering properties that include how they will interact with, on or in a proposed construction. 

The role of geotechnical engineer in mining includes designing and determining the type of foundations, earthworks, and or pavement subgrades required for the intended man-made structures to be made. Geotechnical engineering jobs are involved in earthen and concrete dam construction projects, working under a range of normal and extreme loading conditions. 

3 Jobs Available
Cartographer

How fascinating it is to represent the whole world on just a piece of paper or a sphere. With the help of maps, we are able to represent the real world on a much smaller scale. Individuals who opt for a career as a cartographer are those who make maps. But, cartography is not just limited to maps, it is about a mixture of art, science, and technology. As a cartographer, not only you will create maps but use various geodetic surveys and remote sensing systems to measure, analyse, and create different maps for political, cultural or educational purposes.

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
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
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
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
Investment Director

An investment director is a person who helps corporations and individuals manage their finances. They can help them develop a strategy to achieve their goals, including paying off debts and investing in the future. In addition, he or she can help individuals make informed decisions.

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
Plumber

An expert in plumbing is aware of building regulations and safety standards and works to make sure these standards are upheld. Testing pipes for leakage using air pressure and other gauges, and also the ability to construct new pipe systems by cutting, fitting, measuring and threading pipes are some of the other more involved aspects of plumbing. Individuals in the plumber career path are self-employed or work for a small business employing less than ten people, though some might find working for larger entities or the government more desirable.

2 Jobs Available
Construction Manager

Individuals who opt for a career as construction managers have a senior-level management role offered in construction firms. Responsibilities in the construction management career path are assigning tasks to workers, inspecting their work, and coordinating with other professionals including architects, subcontractors, and building services engineers.

2 Jobs Available
Urban Planner

Urban Planning careers revolve around the idea of developing a plan to use the land optimally, without affecting the environment. Urban planning jobs are offered to those candidates who are skilled in making the right use of land to distribute the growing population, to create various communities. 

Urban planning careers come with the opportunity to make changes to the existing cities and towns. They identify various community needs and make short and long-term plans accordingly.

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
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
Naval Architect

A Naval Architect is a professional who designs, produces and repairs safe and sea-worthy surfaces or underwater structures. A Naval Architect stays involved in creating and designing ships, ferries, submarines and yachts with implementation of various principles such as gravity, ideal hull form, buoyancy and stability. 

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
Veterinary Doctor
5 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
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
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
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
Hospital Administrator

The hospital Administrator is in charge of organising and supervising the daily operations of medical services and facilities. This organising includes managing of organisation’s staff and its members in service, budgets, service reports, departmental reporting and taking reminders of patient care and services.

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
Videographer
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
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
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
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
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
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
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
Linguist

Linguistic meaning is related to language or Linguistics which is the study of languages. A career as a linguistic meaning, a profession that is based on the scientific study of language, and it's a very broad field with many specialities. Famous linguists work in academia, researching and teaching different areas of language, such as phonetics (sounds), syntax (word order) and semantics (meaning). 

Other researchers focus on specialities like computational linguistics, which seeks to better match human and computer language capacities, or applied linguistics, which is concerned with improving language education. Still, others work as language experts for the government, advertising companies, dictionary publishers and various other private enterprises. Some might work from home as freelance linguists. Philologist, phonologist, and dialectician are some of Linguist synonym. Linguists can study French, German, Italian

2 Jobs Available
Public Relation Executive
2 Jobs Available
Travel Journalist

The career of a travel journalist is full of passion, excitement and responsibility. Journalism as a career could be challenging at times, but if you're someone who has been genuinely enthusiastic about all this, then it is the best decision for you. Travel journalism jobs are all about insightful, artfully written, informative narratives designed to cover the travel industry. Travel Journalist is someone who explores, gathers and presents information as a news article.

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
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
Production Manager
3 Jobs Available
Merchandiser
2 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
Metallurgical Engineer

A metallurgical engineer is a professional who studies and produces materials that bring power to our world. He or she extracts metals from ores and rocks and transforms them into alloys, high-purity metals and other materials used in developing infrastructure, transportation and healthcare equipment. 

2 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
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
QA Manager
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
ITSM 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
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
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