Environmental Issues MCQs Mock Test of Class 12th Biology

Welcome to your Environmental Issues MCQs Mock Test of Class 12th Biology

1.

Q1. In normal adults, the enzyme which catalyses conversion of MHb into Hb is:

(i) MHb protease

(ii) MHb oxidase

(iii) MHb lipase

(iv) MHb reductase

2.

Q2. Catalytic converters are fitted into automobiles to reduce emission of harmful gases. Catalytic converters change unburnt hydrocarbons into:

(i) carbon dioxide and water

(ii) carbon monoxide

(iii) methane

(iv) carbon dioxide and methane.

3.

Q3. Peroxyacyl nitrates (PAN) are formed through photochemical reactions between

(i) sulphur oxides and hydrocarbons

(ii) nitrogen oxides and hydrocarbons

(iii) nitrogen oxides and O3

(iv) CFCl3 and O3.

4.

Q4. Rain is called acid rain, its pH is below:

(i) 7

(ii) 6.5

(iii) 6

(iv) 5.6

5.

Q5. Which of the following will be able to cope with greenhouse effect?

(i) Hibernators

(ii) Homeotherms

(iii) Poikilotherms

(iv) Stenotherms

6.

Q6. Which one of the following diseases is not due to contamination of water ?

(i) Hepatitis-B

(ii) Jaundice

(iii) Cholera

(iv) Typhoid.

7.

Q7. Which of the following is an effect of waste accumulation?

(i) Urbanisation

(ii) Over population

(iii) Health problems

(iv) Industrialisation

8.

Q8. Compressed Natural Gas (CNG) is:

(i) propane

(ii) methane

(iii) ethane

(iv) butane.

9.

Q9. Increasing skin cancer and high mutation rate are the result of

(i) ozone depletion

(ii) acid rain

(iii) CO pollution

(iv) CO2 pollution.

10.

Q10. Acid Rain comes under which type of pollution?

(i) Water pollution

(ii) Air pollution

(iii) Soil pollution

(iv) Sound Pollution

11.

Q11. Which of the following elements is responsible for Minamata disease?

(i) Pb

(ii) Cd

(iii) Fe

(iv) Hg

12.

Q12. The material generally used for sound proofing of rooms like a recording studio and auditorium, etc. is:

(i) cotton

(ii) coir

(iii) wood

(iv) styro foam.

13.

Q13. Ozone depletion is occurring widely in

(i) troposphere

(ii) stratosphere

(iii) ionosphere

(iv) all of these.

14.

Q14. Ozone Layer is found in :

(i) Stratosphere

(ii) Lithosphere

(iii) Troposphere

(iv) Hemisphere

15.

Q15. High value of BOD (Biochemical Oxygen Demand) indicates that :

(i) Water is highly polluted

(ii) Water is less polluted

(iii) Consumption of organic matter in the water is higher by the microbes

(iv) Water is pure

16.

Q16. Non-biodegradable pollutants are created by:

(i) nature

(ii) excessive use of resources

(iii) humans

(iv) natural disasters.

17.

Q17. Waterlogging and soil salinity are some of the problems that have come in the water of

(i) Soil erosion

(ii) White revolution

(iii) Green revolution

(iv) Blue revolution.

18.

Q18. Which chemical substance affects the Ozone Layer?

(i) Chlorofluorocarbon

(ii) Chlorine

(iii) Hexafluorocarbon

(iv) Molecular Carbon

19.

Q19. Large-scale disposal of solid waste in low areas of the ground and then covering it with earth is called

(i) Deep well injection

(ii) Landfill

(iii) Pyrolysis

(iv) Incineration

20.

Q20. World’s most problematic aquatic weed is:

(i) Azolla

(ii) Woiffia

(iii) Eichhomia

(iv) Trapa.

21.

Q21. According to the Central Pollution Control Board, particles that are responsible for causing great harm to human health are of diameter

(i) 2.50 micrometers

(ii) 5.00 micrometers

(iii) 10.00 micrometers

(iv) 7.5 micrometers

22.

Q22. Environment (Protection) Act came into force in?

(i) 1986

(ii) 1989

(iii) 1992

(iv) 1993

23.

Q23. A gas produced by paddy fields and involved in global warming is

(i) Carbon dioxide

(ii) Methane

(iii) Sulphur dioxide gas

(iv) Chlorine

24.

Q24. The expanded form of DDT is:

(i) dichloro diphenyl trichloroethane

(ii) dichloro diethyl trichloroethane

(iii) dichloro dipyrydyl trichloroethane

(iv) dichloro diphenyl tetrachloroacetate.

25.

Q25. The material generally used for sound proofing of rooms like a recording studio and auditorium, etc. is

(i) cotton

(ii) coir

(iii) wood

(iv) styrofoam.

26.

Q26. Compressed Natural Gas (CNG) is

(i) propane

(ii) methane

(iii) ethane

(iv) butane.

27.

Q27. Fluoride pollution mainly affect:

(i) Teeth

(ii) Kidney

(iii) Brain

(iv) Heart

28.

Q28. What is the 3R approach?

(i) Reduce, Remove and Replenish

(ii) Reduce, Remove and Reuse

(iii) Reuse, Replenish and Remove

(iv) Reduce, Reuse and Recycle

29.

Q29. Among the following which one causes more indoor chemical pollution?

(i) Burning coal

(ii) Burning cooking gas

(iii) Burning mosquito coil

(iv) Room spray.

30.

Q30. Which of the following is not a cause of natural pollution ?

(i) Volcanic eruption

(ii) UV radiation

(iii) Forest fire

(iv) Mercury

31.

Q31. Natural air pollutant are:

(i) Pollen Grains

(ii) Gases of Volcanic Eruption

(iii) Aerosol

(iv) Fluorides

32.

Q32. Ozone depletion shall cause higher incidence of

(i) Decreased immunity only.

(ii) Skin cancer only

(iii) Skin cancer, Cataract and decreased immunity.

(iv) Cataract only

33.

Q33. The loudness of a sound that a person can withstand without discomfort is about

(i) 150 dB.

(ii) 215 dB.

(iii) 30 dB.

(iv) 80 dB.

34.

Q34. The Government of India has passed the environment (Protection) Act in the year

(i) 1990

(ii) 1987

(iii) 1986

(iv) 1992.

35.

Q35. Bluebaby syndrome results from:

(i) Excess of TDS

(ii) Excess of DO

(iii) Excess of chloride

(iv) Methaemoglobin

36.

Q36. Chlorofluoro carbon are responsible for:

(i) Acid rain

(ii) Ozone layer depletion

(iii) Global warming

(iv) Thermal inversion

37.

Q37. Joint Forest Management Concept was introduced in India during

(i) 1960s

(ii) 1970s

(iii) 1980s

(iv) 1990s

38.

Q38. Which of the following material takes the longest time for biodegradations ?

(i) Cotton

(ii) Paper

(iii) Bone

(iv) Jute.

39.

Q39 The petrol used in engines filled with catalytic converter should be

(a) Simple petrol

(b) Any type of petrol

(c) Unleaded petrol

(d) None of the above

40.

Q40. Which metal inactivates a catalytic converter?

(a) Gold

(b) Iron

(c) Silvers

(d) Lead

41.

Q41. Noise is

(a) pleasant sound

(b) desirable level of sound

(c) undesirable high level of sound

(d) None of the above

42.

Q42. The powder of recycled modified plastic is called

(a) Polythene

(b) polyblend

(c) Polyster

(d) None of the above

43.

Q43. E-wastes are referred to

(a) radioactive waste

(b) Nuclear waste

(c) Can be both (a) and (b)

(d) Electronic waste

44.

Q44. The greenhouse gases are

(a) Hydrogen and Oxygen

(b) Oxygen and nitrogen

(c) Helium and argon

(d) Carbondioxide and methane

45.

Q45. The present average temperature of earth is

(a) 10°C

(b) 12°C

(c) 14°C

(d) 15°C

46.

Q46. The Government of India passed the Water Act in

(a) 1954

(b) 1964

(d) 1984

47.

Q47. Presence of large amount of nutrients in water cause excessive growth of

(a) Lotus

(b) Fungal bloom

(c) Bacterial bloom

(d) Algal bloom

48.

Q48. The world’s most problematic aquatic weed is also called

(a) Terror of delhi

(b) Terror of Mumbai

(c) Terror of Bangalore

(d) Terror of Bengal

49.

Q49. DDT can cause

(a) eutrophication in aquatic plants

(b) biomagnification in aquatic plants

(c) cultural eutrophication in aquatic plants

(d) None of the Above

50.

Q50. Sanitary landfill were adopted as the substitute for

(a) Sewage

(b) Biomagnification

(c) Eutrophication

(d) Open-burning dumps

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