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NCERT Solutions For Class 12 Biology Chapter 16 Environmental Issues

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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.

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

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
NEET Highest Scoring Chapters & Topics
Most Scoring concepts For NEET (Based On Previous Year Analysis)
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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

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 ?

hello,

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

I hope this was helpful!

Good Luck

Hello dear,

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


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


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


Believe in Yourself! You can make anything happen


All the very best.

Hello Student,

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

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

All the best.

If you'll do hard work then by hard work of 6 months you can achieve your goal but you have to start studying for it dont waste your time its a very important year so please dont waste it otherwise you'll regret.

Yes, you can take admission in class 12th privately there are many colleges in which you can give 12th privately.

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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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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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