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NCERT Solutions For Class 12 Biology Chapter 16 Environmental Issues

NCERT Solutions For Class 12 Biology Chapter 16 Environmental Issues

Edited By Irshad Anwar | Updated on Sep 18, 2023 10:43 PM IST | #CBSE Class 12th

NCERT Solutions for Class 12 Biology Chapter 16 Environmental Issues: At the present time, pollution is a great issue of concern, as it's increasing day by day. The human population has grown enormously over the last hundred years. This means an increase in demand for food, water, homes, electricity, roads, automobiles, and numerous other commodities. Solutions for NCERT Class 12 Biology Solutions Chapter 16 will make you understand all those facts that are related to environmental issues. In Environmental Issues Class 12 Solutions, you will get answers to environmental issues, pollution, and their effects. The NCERT Solutions for Class 12 curated by Biology experts are offered so that students can benefit the most and learn without hassle. Scroll down to go through the questions and answers given in NCERT Solutions for Class 12 Biology Chapter 16.

Environmental Issues Class 12 NCERT Solutions explain the main reason for environmental issues, which is all kinds of pollution, and you need to understand where the pollution comes from. So, basically, it is an undesirable change in the physical, chemical, or biological characteristics of land, air, water, or soil, and the agents that bring about these undesirable changes are called pollutants. We have thorough solutions to every chapter of the NCERT Solutions for Class 12 Biology, which have been updated to the CBSE Syllabus 2023–24. If you are looking for the answers to any other class from 6–12, then you can read NCERT solutions as it's the easiest way to get all the solutions to NCERT.

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Class 12 Biology Chapter 16 question answer will help you in case you have any doubts or queries about solving questions from the Environmental Issues Class 12. Go through the concepts of Environmental Issues NCERT once again.

NCERT Solutions For Class 12 Biology Environmental Issues

Chapter 16 has been deleted from the most recent CBSE Syllabus for 2023–24.

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Also Read: NCERT Exemplar for Class 12 Biology Chapter 16 Environmental Issues

NCERT Solutions For Class 12 Biology Chapter 16 Environmental Issues

NCERT solutions for environmental issues Class 12 are given below:

Environmental Issues Class 12 Questions and Answers:

Q1. What are the various constituents of domestic sewage? Discuss the effects of sewage discharge on a river.

Answer:

Domestic sewage refers to the wastewater coming from toilets, kitchen and washings which is passed into sewer systems. Domestic sewage contains fibrous matter, grit, colloidal particles, faecal matter, small sized food leftovers, pathogens, nitrates, phosphates and other salts etc.

The effects of sewage discharge on a river

1. Sewage discharge causes a rise in BOD or biological oxygen demand thus reducing the amount of dissolved oxygen in the river

2. Sewage discharge causes the disappearance of fishes and some other aquatic animals in the river

3. Water becomes turbid, odorous and unfit for human drinking

Class 12 Environmental Issues NCERT Solutions

Q2. List all the wastes that you generate, at home, school or during your trips to other places. Could you very easily reduce the generation of these wastes? Which would be difficult or rather impossible to reduce?

Answer:

In our daily life, we generate a lot of waste at our home, schools, during trips etc.

1. Waste generated at homes- waste paper, old clothes, leather articles, broken crockery, cartons, food leftovers, kitchen wastes etc.

2. Waste generated in schools- paper, discarded pencils, pen refills, cardboards, polythene bags, fruit peels, wrappers etc.

3. Waste generated during trips- papers, plastic bags, bottles, old clothes, leftover fruits and other eatables, cartons, food wrappers, aluminium foils, plastic glasses, thermocol plates and glasses.

Among these waste products, the electronic wastes, crockery, glass item, plastic items, metal cans, polythene carry bags, pet bottles etc an not be reduced. In fact, they are difficult or rather impossible to reduce. They can be sorted by recycling them or dumping them in open landfills. On the other hand, the paper pencil wastes, food items, etc can be easily reduced by dumping them as they are biodegradable and get degraded by decomposers wit time.

Class 12 Biology Chapter 16 NCERT Solutions

Q3. Discuss the causes and effects of global warming. What measures need to be taken to control global warming?

Answer:

Global warming- The rise in the mean temperature of the earth is called global warming.

Causes of global warming- Global warming is mainly caused due to the increased amounts of greenhouse gases in the atmosphere. These gases allow long wave radiations to enter into the atmosphere but do not let them leave, so these radiations remain trapped in the atmosphere and cause the mean temperature to rise. This is similar to the effect of glass walls in a greenhouse on the plants. The main greenhouse gases are:

1. Carbon dioxide- 60% of global warming is caused by carbon dioxide. The atmospheric concentration of carbon dioxide has risen to 280 ppm in 1750 to 380 ppm in 2007 and until 2019 it has risen to above 400. The main reason for the increase in the combustion of fossil fuels and deforestation.

2. Methane- It contributes to 20 % of global warming. The main reason for increase includes incomplete combustions, anaerobic decomposition, chimneys, paddy fields etc.

3. Chlorofluorocarbons- These are compounds of carbon and halogens used as propellants in aerosols, refrigerants, fire extinguishers, plastic foams, jet fuels etc.

4. Nitrous oxide- they are responsible for causing 6 % of global warming. It is formed during the combustion of nitrogen-rich fuels.

Effects of global warming

1. Melting of snow- Due to the increase in global temperature, the polar ice caps and snow mountains will start melting.

2. Sea level- Due to the melting of snow, the sea level will rise leading to submerging of coastal areas.

3. Odd climatic changes- Global warming will lead to odd climatic changes such as a reduction in precipitation, rise in El Nino effect, more floods and droughts, change in the global air current etc.

4. Vegetation- Forest will be turned into scrub vegetation, tropic will have more desserts.

5. Food production- Global warming may lead to a reduction in food production.

Measures to control global warming

1. Reduction in CFCs production

2. Increase in forest areas

3. reduction in the exploitation of fossil fuels

4. Checking population growth

Q4. Write critical notes on the following:

(a) Eutrophication

Answer:

Eutrophication- The term eutrophication is used to refer to the excessive growth of algae, plants and animals in water bodies due to the nutrient enrichment of the water body with nitrogen and phosphorous. Eutrophication can be natural or accelerated. In the case of natural eutrophication, natural ageing causes nutrient enrichment of the water body. This is a slow process that is not detectable in a human lifetime. A young water body has clear, cold water with no nutrient enrichment. The nutrients are added via runoff and streams draining into it. Gradually the water becomes shallower and warmer. Due to this, marsh plants grow in it, floating plants appear. The waterbody is gradually filled upon the shores and changed into the land mass. In cultural or accelerated eutrophication, nutrient enrichment is due to human activities like the passage of sewage, industrial effluents and run-off rich nitrated and phosphates from fertilised fields. These nutrients cause dense growth of plants and planktonic algae over the water body.

Class 12 Biology Chapter 16 Question Answer

Q4. Write critical notes on the following:

(b) Biological magnification

Answer:

Biological magnification- It refers to the increase in the concentration of a persistent chemical with the rise in trophic level. The chemical becomes hazardous when its concentration becomes very high. For example, a DDT concentration of 0.003 ppb becomes 0.003 ppm in phytoplankton, 0.04 ppm in zooplankton, 0.5 ppm in small fish, 2.0 ppm in larger fish and 5 ppm in fish-eating birds. 1650520577311

Environmental Issues Class 12 NCERT Solutions

Q4. Write critical notes on the following:

(c) Groundwater depletion and ways for its replenishment

Answer:

Groundwater depletion and ways of its replenishment-

Groundwater is being pumped out at an enormous rate for its use in agricultural and urban areas resulting in the fall of the water table by 10 m to 30m and depletion of groundwater.

Ways of replenishment of groundwater

1. Rainwater harvesting- The rainwater can be preserved and through this, groundwater is recharged.

2. Sprinkler and sub-surface irrigation techniques- This techniques leads to a reduction in the amount of groundwater used for irrigation.

3. Afforestation

Environmental Issues Class 12 Solutions

Q5. Match the items given in column A and B:

Column A
Column B
a.Catalytic converter
i. Particulate matter
b.Electrostatic precipitator
ii. Carbon monoxide and nitrogen oxides
c.Earmuffs
iii. High noise level
d. Landfills
iv. Solid Wastes

Answer:

The correct matching is as follows:

Column A
Column B
Catalytic converter
Carbon monoxide and nitrogen oxides
Electrostatic precipitator
Particulate matter
Earmuffs
High noise level
Landfills
Solid Wastes


Environmental Issues Class 12 Questions and Answers

Q6. Why does ozone hole form over Antarctica? How will enhanced ultraviolet radiation affect us?

Answer:

The countries like USA, Japan, and other European countries, emit a lot of ozone-depleting substances such as CFCs, N_{2}O, halons, SO_{2}, CH_{4}, Cl etc. These chemicals are released in the stratosphere and they drift towards poles before the onset of winters. During winter, ice clouds are formed over Antarctica with no sunrise. It catalyses the release of Cl from CFCs. During springs, the Cl reacts with ozone and convert it into free oxygen causing depletion of ozone and formation of the ozone hole.

Effects of enhanced UV radiations

1. Snow blindness

2. Inflammation of cornea

3. Damage of skin cells and development of skin cancer

4. Increased incidence of herpes

5. Damage to nucleic acids and proteins

6. Increased blindness in animals

7. Reduced immunity

8. Reduction in photosynthesis

Class 12 Environmental Issues NCERT Solutions:

Q7. Discuss the role of women and communities in protection and conservation of forests.

Answer:

The role of women and communities in the protection and conservation of forests can be understood by following two case studies:

1. Bishnoi community- The Bishnoi community in Bishnoi village of Rajasthan fought with the king and his army for the protection of trees. Amrita Devi a woman of Bishnoi lead this movement and with her daughter and hundreds of other members of her community, embraced the trees and lost their lives in the hands of soldiers. Ultimately the king had to drop this idea of cutting trees for his palace.

2. Chipko movement- In 1974, in the Garhwal region of Himalayas, the Chipko movement was started. During this movement, the villagers hugged the trees and stopped contractors to cut the trees.

Thus, by means of these two case studies, we can conclude that women and social communities have a very large role to play in the prevention of forests.

NCERT Solutions for Class 12 Biology Environmental Issues

Q8. What measures, as an individual, would you take to reduce environmental pollution?

Answer:

The following measures can be taken to reduce environmental pollution

1. Planting more number of trees

2. we can reduce the use of fossil fuels by not using our own vehicles to travel short distances.

3. We should use clean fuel such as CNG in our cars which environment-friendly as well as pocket-friendly.

4. We must segregate the wastes into biodegradable and non-biodegradable waste products. So that wastes can be easily sorted out

5. Encourage the practice to reduce, reuse, recycle

6. We must use catalytic converters in vehicles.

7. We should avoid burning crackers

8. Reduce the use of plastics. We can replace plastic bags with jute bags.

NCERT Solutions for Class 12 Biology Chapter 16:

Q9. Discuss briefly the following:

(a) Radioactive waste

Answer:

Radioactive Wastes-

These waste products include nonusable discards that possess radioactivity. Rdioactive wastes are of three types-

1. Wastes with low-level radioactivity- Include coolant water of atomic reactors, pond water for cooling spent fuel in reactors etc. They emit very small amounts of radioactivity. Irradiation centres, radiotherapy units and laboratories also produce wastes with low radioactivity

2. Wastes with an intermediate level of radioactivity- These include radioactive wastes of many ores which are separated during refinement of minerals.

3. Wastes with high level of radioactivity- spent fuel of atomic reactors and leakage from reactors have a very high level of radioactivity.

The radioactive wastes have to be handled very carefully and should be dumped 500 m deep in the earth or inside sea after placing them inside very thick protective closed containers. These wastes are highly dangerous to human beings, animals, microorganisms etc. High doses cause mutations and they can even be lethal.

Class 12 Biology Chapter 16 NCERT Solutions:

Q9. Discuss briefly the following:

(b) Defunct ships and e-waste

Answer:

Defunct ships and e-wastes-

The dead ships which are not in use are called defunct ships. Defunct ships can be broken down for scrap metal in some countries. Defunct ships can act as a source of heavy metals such as asbestos, lead, mercury etc. E- wastes also called electronic wastes include waste products generated from electronic goods such as computers, televisions, refrigerators etc. Such wastes are highly toxic and can pose serious threats to humans and animals.

Class 12 Biology Chapter 16 Question Answer:

Q9. Discuss briefly the following:

(c) Municipal solid waste

Answer:

The solid waste generated from schools, offices, homes, stores etc is known as municipal solid wastes. The municipal solid waste includes glass, food articles, plastics, stationery, rubber, leather, textiles etc. The municipal solid waste is necessary to dispose of as it acts as a breeding site for mosquitoes thus leading to diseases like dengue, malaria etc. The methods used for safe disposal of solid wastes include sanitary landfills and incineration.

Q10. What initiatives were taken for reducing vehicular air pollution in Delhi? Has air quality improved in Delhi?

Answer:

Delhi is considered to be one of the most polluted cities. The major reasons of Delhi being polluted include increased fossil fuel consumption, increased number of industries etc. Government has taken several steps in order to minimise the vehicular air pollution. Some of these steps are as follows:

1. Introduction of CNG- The supreme court of India in the year 2006, in order to reduce the air pollution, decided that all the public transports such as buses, autos etc will have CNG i.e. compressed natural gas. This is a clean fuel that spreads less pollution.

2. Use of unleaded petrol and non-sulphur petrol and diesel.

3. Phasing out of old vehicles because they cause more pollution.

4. Use of catalytic converters in the automobiles.

5. Implementation of BHARAT stage I in order to control pollution levels

All these steps led to a reduction in the pollution levels in Delhi. The air quality has improved after this as there is a fall in carbon dioxide and sulphur dioxide.

Environmental Issues Class 12 NCERT Solutions:

Q11. Discuss briefly the following :

(a) Greenhouse gase

Answer:

Greenhouse gases-

The gases which cause the greenhouse effect are called greenhouse gases e.g. carbon dioxide, methane, chlorofluorocarbons, nitrous oxide etc. Greenhouse gases allow long wave radiations to enter into the atmosphere but do not let them leave, so these radiations remain trapped in the atmosphere. This causes the greenhouse effect. This is similar to the effect of glass walls in a greenhouse on the plants. The contribution of carbon dioxide, methane, chlorofluorocarbons, nitrous oxide in causing global warming is 60%, 20%,14% and 6% respectively.

1. Carbon dioxide- The atmospheric concentration of carbon dioxide has risen to 280 ppm in 1750 to 380 ppm in 2007 and until 2019 it has risen to above 400. The main reason for the increase in the combustion of fossil fuels and deforestation.

2. Methane- The main reason for increase includes incomplete combustions, anaerobic decomposition, chimneys, paddy fields etc.

3. Chlorofluorocarbons- These are compounds of carbon and halogens used as propellants in aerosols, refrigerants, fire extinguishers, plastic foams, jet fuels etc.

4. Nitrous oxide-It is formed during the combustion of nitrogen-rich fuels.

Environmental Issues Class 12 Solutions:

Q11. Discuss briefly the following : (b) Catalytic converter

Answer:

Catalytic converter

Catalytic converter refers to a device containing platinum, palladium and rhodium that is fitted in the automobiles. The major functions of catalytic converters in the automobile are

1. Complete oxidation of unburnt hydrocarbons

2. Oxidation of carbon monoxide into carbon dioxide

3. Conversion of nitrogen oxides into nitrogen

While using catalytic converters, we must not use gasoline with lead as lead inactivates the catalysis of converter .

NCERT Solutions for Class 12 Biology Environmental Issues:

Q11. Discuss briefly the following : (c) Ultraviolet B

Answer:

Ultraviolet- B

The part of ultraviolet radiation having a wavelength of 280-320 nm. UV-B is harmful to organisms. The ozone layer in the stratosphere absorbs 50% of total UV-B. Due to depletion of ozone, mostly UV-B radiations reach the Earth. In humans, UV radiation causes snow blindness, cataract, skin cancer, skin ageing, mutations etc.

NCERT Solutions for Class 12 Biology Chapter 16 – Environmental Issues

Biology Chapter 16 Class 12 solutions have questions and answers to environmental issues Class 12 NCERT that will also help you in preparing for other competitive exams. In Ch 16 Biology Class 12, you will also study that two major environmental issues of global nature are increasing the greenhouse effect, which is warming Earth, and depletion of ozone in the stratosphere. The enhanced greenhouse effect is mainly due to increased emission of carbon dioxide, methane, nitrous oxide, and CFCs., and also due to deforestation. You will see questions based on these concepts in NCERT solutions for Biology Class 12 chapter 16.

NCERT Solutions for Class 12 Biology Chapter 16 – The CBSE Syllabus 2022–23 includes a unit on ecology that covers biodiversity and its conservation. The following chapters make up the ecology unit:

  • Organisms and Population
  • Ecosystem
  • Biodiversity and Its Conservation
  • Environmental Issues
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According to recent exam trends, the Unit - Ecology is worth 14 marks overall. Thus, it is necessary for students to thoroughly understand all concepts and to practice using Environmental Issues NCERT Solutions, sample papers and previous year's questions. In order to quickly understand difficult concepts, students can use the NCERT Solutions for Class 12 Biology Chapter 16 as a quick reference.

After going through the solutions for NCERT Class 12 Biology Chapter 16 Environmental Issues, you must be able to understand the questions and answers mentioned in environmental issues NCERT. If still confused or have any problems answering these questions, then NCERT Solutions Class 12 Biology Chapter 16 are there for you.

Also, try to attempt all the given questions in Environmental Issues NCERT. Class 12 Biology Chapter 16 NCERT Solutions
will help you to score good marks not only in the 12th Biology board exam as well as also in other competitive exams like NEET. Don't forget to try environmental issues Class 12 NCERT at least once, so that you can answer those questions by yourself. Then check your answers with the Environmental Issues NCERT Solutions for Class 12 Biology.

Important Topics of Environmental Issues Class 12 Solutions are given below:

Important topics from Class 12 Biology Chapter 16 are given below:

Section Name
Topic Name
16
Environmental Issues
16.1Air Pollution and Its Control
16.2Water Pollution and Its Control
16.3Solid Wastes
16.4Agro-chemicals and their Effects
16.5Radioactive Wastes
16.6Greenhouse Effect and Global Warming
16.7Ozone Depletion in the Stratosphere
16.8Degradation by Improper Resource Utilisation and Maintenance
16.9Deforestation
16.10Summary
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Important subtopics in NCERT Solutions for Class 12 Biology Chapter 16

Subtopics of NCERT Solutions for Class 12 Biology Environmental Issues:

  • 16.1.1 Controlling Vehicular Air Pollution: A Case Study of Delhi
  • 16.2.1 Domestic Sewage and Industrial Effluents
  • 16.2.2 A Case Study of Integrated Waste Water Treatment
  • 16.3.1 Case Study of Remedy for Plastic Waste
  • 16.4.1 Case Study of Organic Farming
  • 16.9.1 Case Study of People’s Participation in Conservation of Forests
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Highlights of NCERT Solutions for Class 12 Biology Chapter 16 – Environmental Issues

The key features of the CBSE NCERT Solutions for Class 12 Biology Chapter 16 are given below:

  • Solutions for Environmental Issues Class 12 are written in the best possible way using simple language that makes solutions easier to read and understand
  • In Solutions PDF to NCERT environmental issues, points are used to frame answers to help understand quickly.
  • Solutions content for environmental issues NCERT is derived from the textbook by the subject expert.
  • Solutions for Environmental Issues Class 12 ncert are as per the latest CBSE Syllabus and guidelines.
  • NCERT Solutions PDF links for Chapter 16 Biology Class 12 are readily available and easily accessible for free.
  • Important topics are listed in the Class 12 Biology NCERT Solutions.
  • Solutions for NCERT Biology Class 12 Accessible at all times.

NCERT Solutions for Class 12- Subject wise

NCERT Solutions for Class 12 Biology- Chapter wise

Also Check NCERT Books and NCERT Syllabus here:

NCERT Exemplar Class 12 Solutions


We hope you will ace your board examination with the help of NCERT Solutions For Class 12 Biology Chapter 16 Environmental Issues.

Frequently Asked Question (FAQs)

1. Why you should use environmental issues ncert pdf?
  • NCERT is the base of your learning.
  • You will get all the answers to environmental issues ncert in environmental issues ncert pdf and it will help you to score good marks in the exam.   
  • Environmental issues class 12 ncert pdf  will also help you with competitive exams like NEET.   
  • CBSE NCERT solutions for class 12 biology chapter 16 environmental issues will also help you in your 12th board exam.   
  • Environmental issues class 12 ncert  will also boost your knowledge.
  • To score well in the examination, follow the NCERT syllabus and solve the exercise given in the NCERT Book. To practice more problems, students must refer to NCERT Exemplar.
2. What are the effects of enhanced UV radiations mentioned in Chapter 16 of NCERT Solutions for Class 12 Biology?

These are the effects of enhanced UV radiations:

  1. Snow blindness  

  2. Inflammation of cornea  

  3. Damage of skin cells and development of skin cancer  

  4. Increased incidence of herpes  

  5. Damage to nucleic acids and proteins  

  6. Increased blindness in animals  

  7. Reduced immunity  

  8. Reduction in photosynthesis 

3. What are the main causes of global warming as per the NCERT Solutions Class 12 Biology Chapter 16?

Global warming is mainly caused due to the increased amounts of greenhouse gases in the atmosphere. These gases allow longwave radiations to enter into the atmosphere but do not let them leave, so these radiations remain trapped in the atmosphere and cause the mean temperature to rise. This is similar to the effect of glass walls in a greenhouse on the plants.

4. What are the steps given in environmental issues ncert pdf which can be taken to control global warming ?

  1. Reduction in CFCs production  

  2. Increase in forest areas  

  3. reduction in the exploitation of fossil fuels  

  4. Checking population growth 

5. What are the important topics of NCERT Solutions for Class 12 Biology Chapter 16 PDF?

The important topics of environmental issues ncert pdf are:

  • Air Pollution and Its Control

  • Controlling Vehicular Air Pollution: A Case Study of Delhi   

  • Water Pollution and Its Control   
  • Domestic Sewage and Industrial Effluents   
  • A Case Study of Integrated Waste Water Treatment   
  • Solid Wastes   
  • Case Study of Remedy for Plastic Waste   
  • Agro-chemicals and their Effects   
  • Case Study of Organic Farming   
  • Radioactive Wastes   
  • Greenhouse Effect and Global Warming   
  • Ozone Depletion in the Stratosphere   
  • Degradation by Improper Resource Utilisation and Maintenance   
  • Deforestation

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Questions related to CBSE Class 12th

Have a question related to CBSE Class 12th ?

Here are some options you can explore to get admission in a good school even though admissions might be closed for many:

  • Waitlist: Many schools maintain waitlists after their initial application rounds close.  If a student who secured a seat decides not to join, the school might reach out to students on the waitlist.  So, even if the application deadline has passed,  it might be worth inquiring with schools you're interested in if they have a waitlist and if they would consider adding you to it.

  • Schools with ongoing admissions: Some schools, due to transfers or other reasons, might still have seats available even after the main admission rush.  Reach out to the schools directly to see if they have any open seats in 10th grade.

  • Consider other good schools: There might be other schools in your area that have a good reputation but weren't on your initial list. Research these schools and see if they have any seats available.

  • Focus on excelling in your current school: If you can't find a new school this year, focus on doing well in your current school. Maintain good grades and get involved in extracurricular activities. This will strengthen your application for next year if you decide to try transferring again.


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In India, the design and coding fields offer exciting career options that can leverage your interest in both. Here's how you can navigate this path:

Choosing Your Stream:

  • Graphic Design Focus: Consider a Bachelor's degree in Graphic Design or a design diploma. Build a strong portfolio showcasing your creative skills. Learn the basics of HTML, CSS, and JavaScript to understand web development better. Many online resources and bootcamps offer these introductory courses.

  • Coding Focus: Pursue a Computer Science degree or a coding bootcamp in India. These programs are intensive but can equip you with strong coding skills quickly. While building your coding prowess, take online courses in graphic design principles and UI/UX design.

Engineering Subjects (for a Degree):

  • Information Technology (IT): This offers a good mix of web development, networking, and database management, all valuable for web design/development roles.

  • Human-Computer Interaction (HCI): This is a specialized field that bridges the gap between design and computer science, focusing on how users interact with technology. It's a perfect choice if you're interested in both aspects.

  • Passing NIOS in October 2024 will make you eligible for NIT admissions in 2025 . NIT admissions are based on your performance in entrance exams like JEE Main, which typically happen in January and April. These exams consider the previous year's Class 12th board results (or equivalent exams like NIOS).

Here's why 2025 is more likely:

  • JEE Main 2024 Admissions: The application process for NITs through JEE Main 2024 is likely complete by now (May 2024). They consider your 2023 Class 12th marks (CBSE in this case).
  • NIOS Results: Since NIOS results typically come out after the NIT admission process, your October 2024 NIOS marks wouldn't be available for JEE Main 2024.

Looking Ahead (2025 Admissions):

  • Focus on JEE Main: Since you have a computer science background, focus on preparing for JEE Main 2025. This exam tests your knowledge in Physics, Chemistry, and Mathematics, crucial for engineering programs at NITs.
  • NIOS Preparation: Utilize the time between now and October 2024 to prepare for your NIOS exams.
  • Eligibility Criteria: Remember, NITs typically require a minimum of 75% marks in Class 12th (or equivalent) for general category students (65% for SC/ST). Ensure you meet this criteria in your NIOS exams.

Yes, scoring above 99.9 percentile in CAT significantly increases your chances of getting a call from IIM Bangalore,  with your academic background. Here's why:

  • High CAT Score: A score exceeding  99.9 percentile is exceptional and puts you amongst the top candidates vying for admission. IIM Bangalore prioritizes  CAT scores heavily in the shortlisting process.

  • Strong Academics: Your 96% in CBSE 12th and a B.Tech degree demonstrate a solid academic foundation, which IIM Bangalore also considers during shortlisting.

However, the shortlisting process is multifaceted:

  • Other Factors: IIM Bangalore considers other factors beyond CAT scores, such as your work experience (if any), XAT score (if you appear for it), academic diversity, gender diversity, and performance in the interview and Written Ability Test (WAT) stages (if shortlisted).

Here's what you can do to strengthen your application:

  • Focus on WAT and PI: If you receive a shortlist, prepare extensively for the Written Ability Test (WAT) and Personal Interview (PI). These stages assess your communication, soft skills, leadership potential, and suitability for the program.

  • Work Experience (if applicable): If you have work experience, highlight your achievements and how they align with your chosen IIM Bangalore program.

Overall, with a stellar CAT score and a strong academic background, you have a very good chance of getting a call from IIM Bangalore. But remember to prepare comprehensively for the other stages of the selection process.

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

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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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