Environmental Science Questions and Answers MCQ for Students

Friends, Environmental Science has become an essential topic of all competitive examinations. On which many questions are often asked. That is why we have come here for you the useful quiz questions of environmental science. It is all free and can evaluate your online knowledge with its overall knowledge. Environmental Science objective multiple choice questions will be beneficial for all interviews and competitive exam preparation.

Environmental Science Questions and Answers for Students

1. When was the first National Forest Policy formulated’ ?
(A) 1948 (B) 1980
(C) 1964 (D) 1952✓

2. The concentration of CO2 in atmosphere is increasing at the rate of about–
(A) 4 % (B) 2 %
(C) 0.4%✓  (D) 0.2%

3. Who is the director of Centre for Science and Environment?
(A) Anil Agarwal (B) Sunita Narayan✓
(C) Menka Gandhi (D) Medha Patekar

4. The concentration of ozone is found maximum in–
(A) Troposphere (B) Upper Stratosphere
(C) Lower Stratosphere✓  (D) Mesosphere

5. The National Institute of Oceanography is presently situated at–
(A) Kerala (B) Calicut
(C) Goa✓ (D) Cochin

6. Which elemental cycle has no atmospheric reservoir ?
(A) Sulphur (B) Carbon
(C) Nitrogen (D) Phosphorus✓

7. Highest porosity is found in–
(A) Sand (B) Clay✓
(C) Gravel (D) Silt

8. The main constituent of biogas is–
(A) H2 (B) H 2S
(C) N 2 (D) CH4✓

9. The actual global average surface air temperature is about–
(A) 331 K (B) 288 K✓
(C) 18°C (D) 21 °C

10. Age of earth is approximately–
(A) 3.5 billion (B) 4.5 billion✓
(C) 45 million (D) 3.5 million

11. The target Organ of cadmium toxicity–
(A) Lung (B) Liver
(C) Kidney✓ (D) Bones

12. Who gave the term ecosystem and when?
(A) A. G. Tansley (1935)✓ (B) A.G. Tansley (1925)
‘(C) E. P. Odum (1935) (D) E.P. Odum (1925)

13. The first international conference on Environment Education held in–
(A) Tbilisi (B) New Delhi✓
(C) Bombay (D) Turkey

14. Kyoto Protocol came into force on–
(A) 16 Feb 2004 (B) 16 Feb 2005✓
(C) 16 Feb 2002 (D) 16 Feb 2000

15. The albedo of the earth as a whole is–
(A) 25 % (B) 50 %
(C) 30%✓ (D) 10%

16. Atmospheric humidity is measured by–
(A) Radiometer (B) Hygrometer✓
(C) Hydrometer (D) Micrometer

17. The maximum permissible limit of free residual Chlorine in water is–
(A) 2 ppm (B) 0.02 ppm
(C) 0.2 ppm✓ (D) 20 ppm

18. Radiosonde is used to study–
(A) Earth’s albedo at Surface (B) Estimate pollutants in air
(C) Atmospheric moisture content (D) Upper atmosphere’s conditions✓

19. The compound used for artificial rainmaking/cloud seeding is–
(A) Dry ice (B) Ag I
(C) HgCl2 (D) Both (A) & (B)✓

20. The atmospheric layer reflecting radio waves is called–
(A) Homosphere (B) Ionosphere ✓
(C) Ozonosphere (D) None of these

21. The first Biosphere Reserve in India was–
(A) Sundarban (B) Nanda Devi
(C) Nilgiri✓ (D) Nokrek

22. Headquarter of UNEP is situated at–
(A) Kenya✓ (B) Switzerland
(C) U. S. A. (D) Britain

23. The important GHG mainly released from paddy field is–
(A) CO2 (B) N20
(C) CH4✓ (D) All of above

24. Demography is the statistical study of–
(A) Human Society (B) Human Population✓
(C) Human Settlement (D) Human life

25. The pH of normal rain is–
(A) 6.5 (B) 5.6✓
(C) 4.6 (D) 3.6

26. Any living thing that successfully competes with people for food space, or other essential needs are called–
(A) Virus (B) Bug
(C) Parasite (D) Pest✓

27. Of the following environmental assessment terms, tell which one deals exclusively with the carbon content of the environment?
(A) BOD (B) COD
(C) TOC✓ (D) POC

28. What does the term overkill deal with?
(A) Pesticidal poisoning (B) Soil erosion
(C) Nuclear holocaust✓ (D) Global warming

29. When lakes become acidic due to acid \rain, this is.i.added to counteract the acidity in–
(A) Soil (B) Sand
(C) lime✓ (D) None of the above

30. Which technique can map the concentration of 502 over a whole town by operating Gadget from one location–
(A) LIDAR✓ (B) Spectrophotometer
(C) Gas Chromatography (D) Mass Spectroscopy

31. Photocopying & other electrical equipment produce one of the following pollutants?
(A) Methane (B) Ozone✓
(C) Hydrogen (D) Nitrogen oxides

32. Which oil – tanker accident first alerted the public of the grave problem of oil spills in oceans ?
(A) Agro merchant (B) Ocean Eagle
(C) Exxon Valdez (D) Torrey Canyon✓

33. Mycorrhizae is the association of
(A) Higher plants & fungi✓ (B) Algae & fungi
(C) Lower plants & fungi (D) Both (A) & (C)

34. Largest saltwater lake in India is–
(A) Lonar (B) Chilka✓
(C) Sambhar (D) WuIlar

35. Which detector for DDT should be used in Gas chromatography ?
(A) Electron Capture detector✓ (B) Flame ionised detector
(C) Thermal Conductivity detector (D) None of the above

36. In denitrification process the nitrogen is released in the form of–
(A) NH3 (B) N2
(C) NzO (D) Both (B) & (C)✓

37. Concept of Hypervolume Niche was given by–
(A) Grinnel (B) Clement
(C) Hutchinson✓ (D) Odum

38. Of the following classes of beings, tell which one is least sensitive to nuclear radiation’s–
(A) Single Celled organism✓  (B) Amphibians
(C) Reptiles (D) Birds

39. Of the following types of nuclear bombs, tell which one was tested on a pacific atoll ?
(A) Atom bomb (B) Hydrogen bomb✓
(C) Neutron bomb (D) None of the above

40. What is lost when one organism consume other?
(A) Food (B) Water
(C) Energy✓ (D) Chemicals

41. Where was. the Mitti bachao (save the soil) movement launched in India ?
(A) Thane, Maharashtra (B) Mysore. Karnataka
(C) Darbhanga, Bihar (D) Hoshangabad, M. P.✓

42. For the production of biogas, the Indian biogas plant need–
(A) Fire wood (B) Cattle dung
(C) Agricultural Waste✓  (D) Kerosene

43. Which plant is known as the gasoline plant?
(A) Snluadora persica (B) Sterculia feetida
(C) Theuetia pcrauiana (D) Eupltoribia latlllfris✓

44. Flyash is the environmental pollutant generated by–
(A) Thermal Power Plant✓  (B) Oil refinery
(C) Fertilizer plant (D) Strip mining

45. Permanent hardness of water is caused by–
(A) Carbonates & Chlorides (B) Bicarbonates & sulphates
(C) Carbonates & Bicarbonates (D) Chlorides & Sulphates✓

46. Elemental chlorine is widely used in–
(A) Metallurgy (B) Water purification
(C) Process industry✓ (D) Deodorants

47. Cup anemometer is used for measuring–
(A) Water evaporation (B) Wind speed✓
(C) Wind direction (D) Water flow

48. Which type of humus is acidic in nature?
(A) Mor✓  (B) Mull
(C) Moder (D) All of the above

59. Law of minimum was given by–
(A) Shelford (B) Liebig✓
(C) Blackman (D) Clement

50. When was the Jawaharlal Nehru Community Biodiversity movement launched in India ?
(A) 1988 (B) 1989✓
(C) 1969 (D) 1985

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