Pollution of Air and Water MCQs with answers

Dear candidates you will find MCQ questions of 8th Class - Science | Chapter: Pollution of Air and Water here. Learn these questions and prepare yourself for coming examinations. You can check the right answer of any question by clicking the option or by clicking view answer button.
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Q. Which gas is the major pollutant of air?
  • (A) Carbon monoxide
  • (B) Nitrogen
  • (C) Oxygen
  • (D) Propane
💬 Discuss
✅ Correct Answer: (A) Carbon monoxide
Q. CFC is
  • (A) Chloro fluoro carbon
  • (B) Carbon fluo ro carbon
  • (C) Carbon fourme carbon
  • (D) Carbon fluoro chloro
💬 Discuss
✅ Correct Answer: (A) Chloro fluoro carbon
Q. The increase in concentration of which gas is not responsible for Global Warming?
  • (A) Sulphur dioxide
  • (B) Nitrogen
  • (C) Carbon dioxide
  • (D) Methane
💬 Discuss
✅ Correct Answer: (B) Nitrogen
Q. The reason for greenhouse effect is
  • (A) Decrease in quantity of CO2 in atmosphere
  • (B) Increase in quantity of CO2 in atmosphere
  • (C) Decrease in quantity of oxygen in atmosphere
  • (D) Increase in quantity of oxygen in atmosphere
💬 Discuss
✅ Correct Answer: (B) Increase in quantity of CO2 in atmosphere
Q. In which year Ganga Action Plan was launched?
  • (A) 1980
  • (B) 1984
  • (C) 1982
  • (D) 1985
💬 Discuss
✅ Correct Answer: (D) 1985
Q. The gas depleting ozone layer is
  • (A) Nitrogen
  • (B) Oxygen
  • (C) CFC
  • (D) Carbon dioxide
💬 Discuss
✅ Correct Answer: (B) Oxygen
Q. What radiations are absorbed by CO2?
  • (A) Ultrared radiations
  • (B) Infrared radiations
  • (C) Ultraviolet radiations
  • (D) None of these
💬 Discuss
✅ Correct Answer: (B) Infrared radiations
Q. The greenhouse effect gas is:
  • (A) CO2
  • (B) Methane
  • (C) CFC
  • (D) All of these
💬 Discuss
✅ Correct Answer: (D) All of these
Q. Which element is present in the exhaust of automobiles?
  • (A) Lead
  • (B) Calcium
  • (C) Chromium
  • (D) Magnesium
💬 Discuss
✅ Correct Answer: (A) Lead
Q. Better fuel is
  • (A) Petrol
  • (B) Diesel
  • (C) Coal
  • (D) CNG
💬 Discuss
✅ Correct Answer: (D) CNG
Q. The phenomenon of marble cancer is due to
  • (A) soil particles
  • (B) fog
  • (C) CFCs
  • (D) acid rain
💬 Discuss
✅ Correct Answer: (D) acid rain
Q. The following gas is not an air pollutant
  • (A) Carbon dioxide
  • (B) Oxides of nitrogen
  • (C) Sulphur dioxide
  • (D) Oxygen
💬 Discuss
✅ Correct Answer: (D) Oxygen
Q. The solid or liquid particles dispersed in the air are called
  • (A) oxides
  • (B) acids
  • (C) hydrocarbons
  • (D) aerosols
💬 Discuss
✅ Correct Answer: (D) aerosols
Q. The following gas forms acid rain
  • (A) Carbon dioxide
  • (B) Ozone
  • (C) Sulphur dioxide
  • (D) Carbon monoxide
💬 Discuss
✅ Correct Answer: (C) Sulphur dioxide
Q. The type of pollution which is likely to affect Taj Mahal in Agra to a greater extent is
  • (A) air pollution
  • (B) soil pollution
  • (C) water pollution
  • (D) noise pollution
💬 Discuss
✅ Correct Answer: (A) air pollution
Q. Which of the following Is not a pollutant unless present in excess:
  • (A) Nitrogen dioxide
  • (B) Carbon dioxide
  • (C) Carbon monoxide
  • (D) Sulphur dioxide
💬 Discuss
✅ Correct Answer: (B) Carbon dioxide
Q. The major causes of air pollution include
  • (A) burning of coal and petroleum
  • (B) afforestation
  • (C) deforestation
  • (D) recycling of paper
💬 Discuss
✅ Correct Answer: (A) burning of coal and petroleum
Q. Which of the following is not a greenhouse gas:
  • (A) Carbon dioxide
  • (B) Sulphur dioxide
  • (C) Methane
  • (D) Nitrogen
💬 Discuss
✅ Correct Answer: (D) Nitrogen
Q. Bhopal tragedy was caused due to
  • (A) air pollution
  • (B) emission of poisonous gas
  • (C) water pollution
  • (D) leakage of poisonous gas
💬 Discuss
✅ Correct Answer: (D) leakage of poisonous gas
Q. Addition of harmful and poisonous substances in our environment is called:
  • (A) Population
  • (B) Pollution
  • (C) Purification
  • (D) None of these
💬 Discuss
✅ Correct Answer: (B) Pollution

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Table of contents

  1. Which gas is the major pollutant of air?
  2. CFC is
  3. The increase in concentration of which gas is not responsible for Global Warming?
  4. The reason for greenhouse effect is
  5. In which year Ganga Action Plan was launched?
  6. The gas depleting ozone layer is
  7. What radiations are absorbed by CO2?
  8. The greenhouse effect gas is:
  9. Which element is present in the exhaust of automobiles?
  10. Better fuel is
  11. The phenomenon of marble cancer is due to
  12. The following gas is not an air pollutant
  13. The solid or liquid particles dispersed in the air are called
  14. The following gas forms acid rain
  15. The type of pollution which is likely to affect Taj Mahal in Agra to a greater extent is
  16. Which of the following Is not a pollutant unless present in excess:
  17. The major causes of air pollution include
  18. Which of the following is not a greenhouse gas:
  19. Bhopal tragedy was caused due to
  20. Addition of harmful and poisonous substances in our environment is called:

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