This quiz works best with JavaScript enabled. Home > Cbse > Class 8 > Science > Pollution Of Air And Water > Class 8 Science Chapter 18 Pollution Of Air And Water – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Science Chapter 18 Pollution Of Air And Water Quiz 4 (33 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is the main source of carbon monoxide (CO)? A) Fungicides. B) Pesticides. C) Household Waste. D) Automobiles. Show Answer Correct Answer: D) Automobiles. 2. Which of the following is a non-biodegradable pollutant? A) Oxides of nitrogen. B) DDT. C) Sulphur dioxide. D) Smoke. Show Answer Correct Answer: B) DDT. 3. Which of these is the largest cause of air pollution? A) SPM. B) Lead. C) CO2. D) Automobile emissions. Show Answer Correct Answer: D) Automobile emissions. 4. Greenhouse gases includes A) CO2, Methane, Chlorine. B) CO2, Argon, Nitrous oxide. C) CO2, Methane, Flourine. D) CO2, Methane, Nitrous oxide. Show Answer Correct Answer: D) CO2, Methane, Nitrous oxide. 5. Process of adding Chlorine to kill bacteria in water? A) Chlorider. B) Chlorination. C) Chlorisation. D) Chlorine adder. Show Answer Correct Answer: B) Chlorination. 6. The substance that pollute the natural substance is called A) Pollutant. B) Reactant. C) Fertilizer. D) Magnifier. Show Answer Correct Answer: A) Pollutant. 7. Which is the less polluting fuel / A) CNG. B) Petrol. C) Diesel. D) Candle zone. Show Answer Correct Answer: A) CNG. 8. GREEN HOUSE GASES ARE A) NITROGEN, WATER VAPOUR AND CARBON DIOXIDE. B) NITROGEN, METHANE AND OXYGEN. C) NIROGEN, CARBONDIOXIDE AND OXYGEN. D) CARBON DIOXIDE, WATER VAPOUR AND METHANE. Show Answer Correct Answer: D) CARBON DIOXIDE, WATER VAPOUR AND METHANE. 9. Nitrogen dioxide reacts with water to form nitric acid A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 10. What is the full form of CFCs? A) Chloroplast. B) Chlorocarbons. C) Chlorophyll. D) Chlorofluorocarbons. Show Answer Correct Answer: D) Chlorofluorocarbons. 11. THE PETROLEUM PRODUCT WHICH IS NOT USED AS A FUEL IS: A) KEROSENE. B) PETROL. C) DIESEL. D) PETROLEUM JELLY. Show Answer Correct Answer: D) PETROLEUM JELLY. 12. Which of the following air pollutant is capable of preventing photosynthesis in plants A) Carbon monoxide. B) Dust. C) Nitrogen dioxide. D) CFC'S. Show Answer Correct Answer: B) Dust. 13. What is the percentage of nitrogen gas? A) 20.95%. B) 0.97%. C) 78.08%. D) None of above. Show Answer Correct Answer: C) 78.08%. 14. What should be used instead of air conditioners in homes and offices ..... A) Fans. B) Geyser. C) None of these. D) None of the above. Show Answer Correct Answer: A) Fans. 15. Integrating industrial areas and residential areas is beneficial for both. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 16. The major causes of air pollution include A) Burning of coal and petroleum. B) Afforestation. C) Deforestation. D) Recycling of paper. Show Answer Correct Answer: A) Burning of coal and petroleum. 17. Which of the following statement about ozone is correct A) It is mainly responsible for global warming. B) It's proportion in air is 3%. C) It absorbs ultraviolet rays. D) It is essential for breathing. Show Answer Correct Answer: C) It absorbs ultraviolet rays. 18. Identify a cleaner vehicle fuel from the given options. A) Kerosene. B) Petrol. C) Diesel. D) CNG. Show Answer Correct Answer: D) CNG. 19. PLANT MAHAOTSAV IS:- A) PLANTING TREES IN MARCH. B) CUTTING TREES IN MARCH. C) CUTTING TREES IN JULY. D) PLANTING TREES IN JULY. Show Answer Correct Answer: D) PLANTING TREES IN JULY. 20. Which of the following techniques of irrigation should be used to save water? A) Drip irrigation. B) Canal irrigation. C) Lift irrigation. D) Water wheel. Show Answer Correct Answer: A) Drip irrigation. 21. 14 Riya wants to contribute in reducing air pollution Which vehicle should she use for going to school A) Car. B) Scooter. C) School bus. D) Auto rickshaw. Show Answer Correct Answer: C) School bus. 22. Which of the following is a natural source of air pollution? A) Smoke from Volcanic eruptions. B) Burning of fossil fuels. C) Release of gases from vehicles. D) None of the above. Show Answer Correct Answer: A) Smoke from Volcanic eruptions. 23. ..... is a precious natural resource. A) Soil. B) Gold. C) Water. D) Air. Show Answer Correct Answer: C) Water. 24. We should not dispose ..... in sinks A) Oils. B) Food waste. C) None of these. D) None of the above. Show Answer Correct Answer: A) Oils. 25. Bacteria in the water feed on the chemicals and when it dies it serves as food for the algae. thus oxygen level decreases. is this true or false A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: A) False. 26. Trees help in reducing Air and Noise pollution. Lakhs of trees are planted in the month of July every year This occasion is called A) Forest conservation day. B) Plantation month. C) Wildlife week. D) Van Mahotsava. Show Answer Correct Answer: D) Van Mahotsava. 27. Which of the following is not a consequence of global warming? A) Increasing sea level. B) Decreasing temperature. C) Melting of ice at the poles. D) None of the above. Show Answer Correct Answer: B) Decreasing temperature. 28. Oil forms a layer on the water surface and prevents ..... from entering the water. A) Air. B) Litter. C) Straws. D) Fish. Show Answer Correct Answer: A) Air. 29. In a(n) ..... , a layer of warm air presents rising air from escaping, and traps pollutants near the Earth's surface. A) Blackout. B) Smog storm. C) Temperature inversion. D) Forest fire. Show Answer Correct Answer: C) Temperature inversion. 30. Which of the following does not help in water conservation A) Recycle. B) Reuse. C) Replace. D) Reduce. Show Answer Correct Answer: C) Replace. 31. The major source of water pollution is A) Use of pesticides. B) Use of fertilizer in Agriculture. C) Discharging of untreated industrial waste into rivers and lakes. D) All the above. Show Answer Correct Answer: D) All the above. 32. Sewage water from residential areas and used water from industries must be disposed of directly into the rivers and lakes. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 33. CFCs are used in refrigerators, air conditioners, aerosol sprays but damages the oxygen layer in the atmosphere A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. ← PreviousRelated QuizzesScience QuizzesClass 8 QuizzesClass 8 Science Chapter 18 Pollution Of Air And Water Quiz 1Class 8 Science Chapter 18 Pollution Of Air And Water Quiz 2Class 8 Science Chapter 18 Pollution Of Air And Water Quiz 3 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books