Class 8 Science Chapter 18 MCQ Question Answer of Pollution of Air and Water NCERT Solution in Hindi. NCERT Class 8 Science Question Answer and Important Question Answer, Textual Question answer also Available for Various Board Students like HBSE, CBSE, UP board, Mp Board, RBSE and some other State Boards.
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NCERT Solution for Class 8 Science Chapter 18 Pollution of Air and Water MCQ Question Answer.
Pollution of Air and Water Class 8 MCQ Question Answer
1. What is the Percentage of Nitrogen in air?
(a) 76%
(b) 77%
(c) 78%
(d) 79%
Answer
Ans. (c) 78%
2. What is the Percentage of Oxygen in air?
(a) 21%
(b) 22%
(c) 23%
(d) 24%
Answer
Ans. (a) 21%
3. What is the Percentage of Water on Earth?
(a) 70%
(b) 71%
(c) 73%
(d) 74%
Answer
Ans. (b) 71%
4. What is the full form of CFC?
(a) Chlorofluorocarbon
(b) Carbonfluorochloro
(c) chlorofluorochlorine
(d) None
Answer
Ans. (a) Chlorofluorocarbons
5. What is the full form of CNG?
(a) Common Natural Gas
(b) Compressed Natural Gas
(c) Common New Gas
(d) Commercial Natural Gas
Answer
Ans. (b) Compressed Natural Gas
6. What is the full form of LPG?
(a) Liquid Petroleum Gas
(b) Local Petroleum Gas
(c) Lubricant Petroleum Gas
(d) Liquid Purified Gas
Answer
Ans. (a) Liquid Petroleum Gas
7. Ganga Action Plan was launched in
(a) 1965
(b) 1975
(c) 1985
(d) 1995
Answer
Ans. (c) 1985
8. What is the full form of NMCG?
(a) National Mission for Clean Ganga
(b) National Ministry for Clear Ganga
(c) National Month for Clean Ganga
(d) National Ministry for Clear Ganga
Answer
Ans. (a) National Mission for Clean Ganga
9. Which of the following is not a greenhouse gas?
(a) Carbon dioxide
(b) Sulphur dioxide
(c) Methane
(d) Nitrogen
Answer
Ans. (d) Nitrogen