Environmental Studies MCQ Multiple Choice Questions Answers for Practice

Q: 2. Major cause of increment in population growth

Correct Answer is: decrease in mortality rate

Q: 4. Nitrogen gets oxidized into

Correct Answer is: Nitrates and nitrites

Q: 6. Nutrients are recycled in ecosystem by

Correct Answer is: Biogeochemical cycle

Q: 11. The drop in air temperature at a rate of 6.50 C per 1000 m increase in altitude of troposphere is known as

Correct Answer is: Environmental degradation

Q: 13. The Ecological pyramid that is always upright

Correct Answer is: Pyramid of energy

Q: 16. The layer of atmosphere containing much of ozone gas is

Correct Answer is: Stratosphere

Q: 17. The layer which provides ideal site for flying of jet planes is

Correct Answer is: Stratosphere

Q: 18. The layers of atmosphere consists of

Correct Answer is: Troposphere, Stratosphere, Mesosphere and Temperature

Q: 19. The loss of water from plants and tree leaves is called

Correct Answer is: Transpiration

Q: 20. The main components of photochemical smog is

Correct Answer is: oxides of nitrogen

1. Lowest layer of atmosphere is called

Thermosphere
Stratosphere
Troposphere
Mesosphere

2. Major cause of increment in population growth

decrease in birth rate
decrease in mortality rate
illiteracy
none of the above

3. Most stable ecosystem is

Forest
Desert
Ocean
Mountain

4. Nitrogen gets oxidized into

Nitrates and ammonia
Ammonia and urea
Urea and nitrite
Nitrates and nitrites

5. Noise is measured using sound meter and the unit is

Hertz
Decibel
Joule
Sound

6. Nutrients are recycled in ecosystem by

Biogeochemical cycle
Energy flow
Producers
Consumers

7. Region where fresh water meets salt water is called

Sea
Lake
River
Estuarine

8. Sequence of eating and being eaten in a ecosystem is called

Food web
Natural cycle
Ecological Pyramid
Food chain

9. Study of trends in human population growth and prediction of future growth is called

Demography
Biography
paleography
psychology

10. The concentration of which gas is highest in our environment?

Oxygen
Hydrogen
Nitrogen
Carbon dioxide

11. The drop in air temperature at a rate of 6.50 C per 1000 m increase in altitude of troposphere is known as

Environmental lapse rate
Environmental degradation
Green house effect
Global warming

12. The ecological pyramid always starts with the following at the base

Decomposer
Producer
Consumer
None of these

13. The Ecological pyramid that is always upright

Pyramid of energy
Pyramid of biomass
Pyramid of number
None of these

14. The flow of energy is

Oneway
Cyclic
Linear and oneway
None of these

15. The green plants are also called

Producers
Consumers
Reducers
Detritivores

16. The layer of atmosphere containing much of ozone gas is

Thermosphere
Stratosphere
Troposphere
Troposphere

17. The layer which provides ideal site for flying of jet planes is

Thermosphere
Stratosphere
Mesosphere
Troposphere

18. The layers of atmosphere consists of

Troposphere, Stratosphere, Mesosphere and Temperature
Hydrosphere and biosphere
Lithosphere and Hydrosphere
Biosphere and Hydrosphere

19. The loss of water from plants and tree leaves is called

Precipitation
Respiration
Evaporation
Transpiration

20. The main components of photochemical smog is

water vapour
sulphur dioxide
oxides of nitrogen
all of the above

21. The most important organisms of an ecosystem are

Herbivores
Producers
Carnivores
Protozon

22. The subsurface sources of water is

River
Dug well
Stream
Ocean

23. The sudden increase in the population of the species is

population growth
population explosion
over population
all above

24. The TAJ MAHAL at AGRA may be damaged by

sulphur dioxide
chlorine
hydrogen
oxygen

25. The term Environment is derived from an old French word enviro means

Outside
Surroundings
Inside
Biotic community

26. The three major living components of an ecosystem are

Producers, consumers and Decomposers
Producers, Autotrophs and Decomposers
Heterotrophs, Consumers and Reducers
Detritivores, Consumers and Phototrophs

27. Which of the following is not a method of water conservation

rain water harvesting
ground water extraction
improving irrigation efficiency
avoiding water wastage

28. Which of the following statement about the forest is not correct

Forest reduces soil erosion
Provides recreational opportunities
Provides economic development
None of the above

29. Word oikos means.............and logos means..............

Houses and study of
Study and houses
Only houses
Study of people

30. Zone consisting air, water and soil is known as

Hydrosphere
Atmosphere
Lithosphere
Biosphere

Environmental Studies MCQs are essential for students and exam aspirants looking to deepen their understanding of environmental issues and prepare for various assessments. These questions cover a wide range of topics and help reinforce key concepts.

About Environmental Studies MCQ Questions

Environmental Studies MCQs cover a broad spectrum of topics including ecology, biodiversity, pollution, climate change, and sustainable development. These questions are designed to test your knowledge, critical thinking, and problem-solving skills in the field of environmental science.

Why Practice Environmental Studies Objective Questions?

Practicing Environmental Studies MCQs offers numerous benefits. It helps you prepare for school and college exams, competitive exams, and job interviews. Regular practice enhances your understanding of key concepts, improves your recall, and boosts your confidence in tackling complex environmental issues.

Who Should Use These MCQs?

Students preparing for school or college exams
Competitive exam aspirants
Candidates preparing for interviews