Environmental Science Questions and Answers Multiple Choice with PDF

Most important Environmental Science questions and answers useful for General Agriculture for ICAR and other JRF, SRF, ARS, Ph.D., M.Sc. IBPS, AFO, AO, IFS, NABARD Agri Competitive exams and Tests.

1. Nalgonda technique is used for
(A) Chloride (B) Fluoride✓
(C) Bromide (D) Cadmium

2. Mycorrhiza help in the uptake of–
(A) Potassium (B) Phosphorus✓
(C) Nitrate (D) Boron

3. In which of the following, inverted pyramid of biomass is found?
(A) Grassland ecosystem (B) Pond ecosystem✓
(C) Desert ecosystem (D) Forest ecosystem

4. 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✓

5. 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

6. The main pollutant of London smog was
(A) S02✓ (B) N02
(C) PAN (D) Ozone

7. Which type of symbiosis is obligatory?
(A) Mutualism✓ (B) Protocooperation
(C) Commensalism (D) Amensalism

8. Which region of the seas & oceans are the most polluted?
(A) Estuarine (B) Coastal✓
(C) Sea depths (D) Coral

9. Who formulated the ecological concept of the pyramid of numbers?
(A) Charles Elton✓  (B) Paul R.. Ehrlich
(C) Paul Clairvaux (D) All of the above

10. Which forest area in India was first brought under control & protection?
(A) Malabar✓  (B) Konkan
(C) Garhwal (D) Sunderbans

11. The most commonly used method for desalination of water is–
(A) Distillation (B) Reverse osmosis✓
(C) Electrodialysis (D) Flash evaporation

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

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

14. Which were the first living beings to establish themselves on rocky slopes?
(A) Toads (D) Grasses
(C) Lichens✓  (D) Frogs

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

16. The dominance of a new genetic form as a result of environmental change is called–
(A) Adaptation (B) Natural selection✓
(C) Succession (D) Synergism

17. Which is the most abundant of all the hydrocarbon pollutants in the atmosphere?
(A) Propane (B) Methane✓
(C) Butane  (D) Benzene

18. When was the use of DOT banned for agricultural purposes in India?
(A) 1962 (B) 1985✓
(C) 1974 (D) 1971

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

20. When was Ganga action plan launched?
(A) June 1985✓ (B) December 1985
(C) May 1984 (D) July 1984

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

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

23. 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

24. Mosquito repellent coils/mats contain–
(A) Paraquat (B) BHC
(C) Toxaphene (D) Derivatives of Allethrin✓

25. Lambert's & Beer's law is used in–
(A) Spectrophotometer✓  (B) Chromatography
(C) Potentiometer (D) pH meter

26. Vehicular pollution emits mainly
(A) S02 (B) CO✓
(C) NO (D) Ozone

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

28. When was project tiger launched in India?
(A) 1972 (B) 1973✓
(C) 1978 (D) 1974

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

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

31. In which Biodiversity act was year Proposed?
(A) 2000✓ (B) 2002
(C) 2004 (D) 1998

32. About 50% of the atmosphere lies below–
(A) 5.6 km✓ (B) 10 km
(C) 15 km (D) 30 km

33. The specific heat of water is–
(A) 1 call/gml/ ° C✓ (B) 4.18cal/gm/° C
(C) 1 Ioule/gml/ ° C (D) 10 call/gml/° C

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

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

36. The radiosonde is used to study
(A) Earth's albedo at Surface (B) Estimate pollutants in the air
(C) Atmospheric moisture content (D) Upper atmosphere's conditions✓

37. The origin of the simplest life is attributed to–
(A) Proterozoic Era (B) Cambrian Era
(C) Archaeozoic Era✓ (D) None of the above

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

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

40. Which of the following is mainly responsible for eutrophication?
(A) Phosphate✓ (B) Nitrate
(C) Carbonate (D) Sulphate

41. Who gave the term ecosystem and when?
(A) 1978 (B) 1968
(C) 1988✓ (D) 1998

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

43. The residence time of N20 in atmosphere is approximately
(A) 15 years (B) 150 years✓
(C) 15 weeks (D) 15 days

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

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

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

47. Among the following which gas is found in maximum concentration in atmosphere?
(A) Rn (B) Xe
(C) Kr (D) Ar✓

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

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

50. Ventilation coefficient is–
(A) Maximum mixing depth divided by average wind speed.
(B) The product of maximum mixing depth and maximum wind speed.
(C) Maximum mixing height divided by maximum wind speed
(D) The product of maximum mixing depth and average wind speed✓ 

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