Environmental Issues MCQ Questions for Class 12 Biology Chapter 16 with Answers

Find here the NCERT chapter-wise Multiple Choice Questions from Class 12 Biology book Chapter 16 Environmental Issues with Answers Pdf free download. This may assist you to understand and check your knowledge about the chapters. Students also can take a free test of the Multiple Choice Questions of Environmental Issues. Each question has four options followed by the right answer. These MCQ Questions are selected supported by the newest exam pattern as announced by CBSE.

NCERT MCQ Chapters for Class 12 Biology

Q1. Which of the following is an effect of waste accumulation?

(i) Urbanisation
(ii) Over population
(iii) Health problems
(iv) Industrialisation

(iii) Health problems

Q2. Compressed Natural Gas (CNG) is:

(i) propane
(ii) methane
(iii) ethane
(iv) butane.

(ii) methane

Q3. Increasing skin cancer and high mutation rate are the result of

(i) ozone depletion
(ii) acid rain
(iii) CO pollution
(iv) CO2 pollution.

(i) ozone depletion

Q4. Acid Rain comes under which type of pollution?

(i) Water pollution
(ii) Air pollution
(iii) Soil pollution
(iv) Sound Pollution

(iii) Soil pollution

Q5. Which of the following elements is responsible for Minamata disease?

(i) Pb
(ii) Cd
(iii) Fe
(iv) Hg

(iv) Hg

Q6. 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.

(iv) styro foam.

Q7. Ozone depletion is occurring widely in

(i) troposphere
(ii) stratosphere
(iii) ionosphere
(iv) all of these.

(ii) stratosphere

Q8. Ozone Layer is found in :

(i) Stratosphere
(ii) Lithosphere
(iii) Troposphere
(iv) Hemisphere

(i) Stratosphere

Q9. 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

(i) Water is highly polluted

Q10. Non-biodegradable pollutants are created by:

(i) nature
(ii) excessive use of resources
(iii) humans
(iv) natural disasters.

(iii) humans

Q11. 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.

(iii) Green revolution

Q12. Which chemical substance affects the Ozone Layer?

(i) Chlorofluorocarbon
(ii) Chlorine
(iii) Hexafluorocarbon
(iv) Molecular Carbon

(i) Chlorofluorocarbon

Q13. 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

(ii) Landfill

Q14. World’s most problematic aquatic weed is:

(i) Azolla
(ii) Woiffia
(iii) Eichhomia
(iv) Trapa.

(iii) Eichhomia

Q15. 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

(i) 2.50 micrometers

Q16. Environment (Protection) Act came into force in?

(i) 1986
(ii) 1989
(iii) 1992
(iv) 1993

(iii) 1992

Q17. A gas produced by paddy fields and involved in global warming is

(i) Carbon dioxide
(ii) Methane
(iii) Sulphur dioxide gas
(iv) Chlorine

(ii) Methane

Q18. The expanded form of DDT is:

(i) dichloro diphenyl trichloroethane
(ii) dichloro diethyl trichloroethane
(iii) dichloro dipyrydyl trichloroethane
(iv) dichloro diphenyl tetrachloroacetate.

(i) dichloro diphenyl trichloroethane

Q19. 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.

(iv) styrofoam.

Q20. Chlorofluoro carbon are responsible for:

(i) Acid rain
(ii) Ozone layer depletion
(iii) Global warming
(iv) Thermal inversion

(iv) Thermal inversion

Q21. Joint Forest Management Concept was introduced in India during

(i) 1960s
(ii) 1970s
(iii) 1980s
(iv) 1990s

(iii) 1980s

Q22. Which of the following material takes the longest time for biodegradations ?

(i) Cotton
(ii) Paper
(iii) Bone
(iv) Jute.

(iii) Bone

Q23. Compressed Natural Gas (CNG) is

(i) propane
(ii) methane
(iii) ethane
(iv) butane.

(ii) methane

Q24. Fluoride pollution mainly affect:

(i) Teeth
(ii) Kidney
(iii) Brain
(iv) Heart

(i) Teeth

Q25. 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

(iv) Reduce, Reuse and Recycle

Q26. Among the following which one causes more indoor chemical pollution?

(i) Burning coal
(ii) Burning cooking gas
(iii) Burning mosquito coil
(iv) Room spray.

(i) Burning coal

Q27. Which of the following is not a cause of natural pollution ?

(i) Volcanic eruption
(ii) UV radiation
(iii) Forest fire
(iv) Mercury

(iv) Mercury

Q28. Natural air pollutant are:

(i) Pollen Grains
(ii) Gases of Volcanic Eruption
(iii) Aerosol
(iv) Fluorides

(ii) Gases of Volcanic Eruption

Q29. 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

(iii) Skin cancer, Cataract and decreased immunity.

Q30. 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.

(iv) 80 dB.

Q31. The Government of India has passed the environment (Protection) Act in the year

(i) 1990
(ii) 1987
(iii) 1986
(iv) 1992.

(iii) 1986

Q32. Bluebaby syndrome results from:

(i) Excess of TDS
(ii) Excess of DO
(iii) Excess of chloride
(iv) Methaemoglobin

(iv) Methaemoglobin

Q33. 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

(iv) MHb reductase

Q34. 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.

(i) carbon dioxide and water

Q35. 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.

(ii) nitrogen oxides and hydrocarbons

Q36. Rain is called acid rain, its pH is below:

(i) 7
(ii) 6.5
(iii) 6
(iv) 5.6

(iv) 5.6

Q37. Which of the following will be able to cope with greenhouse effect?

(i) Hibernators
(ii) Homeotherms
(iii) Poikilotherms
(iv) Stenotherms

(ii) Homeotherms

Q38. Which one of the following diseases is not due to contamination of water ?

(i) Hepatitis-B
(ii) Jaundice
(iii) Cholera
(iv) Typhoid.

(i) Hepatitis-B

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