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Class 8 Science Chapter 18 Pollution Of Air And Water Quiz 6 (25 MCQs)

Quiz Instructions

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1. Potable water is the water
2. ..... is commonly used as coolants in refrigerators.
3. A pond contains clean water. Which of the following activities will produce the least pollution of water?
4. The substances that pollute water are called .....
5. When did Taj Mahal pollution start?
6. Boojhoo remembers seeing a thick fog-like layer in the atmosphere, especially during winters. This is smog which is made up of ..... and .....
7. Climate change caused by extra carbon dioxide in the air that causes heat to get trapped in the atmosphere is called
8. Conservation of water can be done by conserving the water cycle.
9. The type of rain in which oxides of sulphur and nitrogen dissolve in the rain is called .....
10. The gradual downward flow of water that soaks into surface
11. HOW DOES WINDMILLS WORK
12. When did Ganga action plan start?
13. Forest Festival
14. A colorless, odorless gas that decreases the blood's ability to carry oxygen. Can cause faintness, death.
15. What effect does the increased concentration of carbon dioxide have on atmospheric temperature?
16. Increasing levels of greenhouse gases like ..... are leading to global warming.
17. Side effect if we breath carbon monoxide:reduced the oxygen-carrying capacity of the blood
18. Which layer in the atmosphere protects us by absorbing harmful uitravaraint radiations of the sun.
19. What fuel should the vehicle be using to cause minimum air pollution?
20. Which is a step you could take to reduce your carbon footprint?
21. Which of the following is most dangerous?
22. Lack of which of the following will kill you faster
23. The constituent of polluted air which contributes in producing acid rain is .....
24. Smoke may contain oxides of ..... which combine with other air pollutants and fog to form smog.
25. WHICH OF THE FOLLOWING DOES NOT CAUSE AIR POLLUTION?
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