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PHYSICAL SCIENCE NOTES | CHAPTER – 1 | PDF DOWNLOAD | Chapter 1 | Class 10 | Concerns about our Environment | West Bengal Board | PDF Download | Madhyamik Examination 2022 | Edwise Coaching Classes
WB MADHYAMIK PHYSICAL SCIENCE CHAPTER- 1 NOTES
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FOR SHORT AND MCQ (1 MARK)
1. Which layer of the atmosphere contains cloud, rain and snow?
Ans: Troposphere.
2. Which layer of the atmosphere contains most of the mass?
Ans: Troposphere.
3. In which layer of the atmosphere weather and climatic change takes place?
Ans: Troposphere.
4. In which layer of the atmosphere photochemical smoke forms?
Ans: Troposphere.
5. Where is the altitude of troposphere maximum?
Ans: At Equator (16 KM).
6. What is the layer between troposphere and stratosphere called?
Ans: Troposphere.
7. Which layer of atmosphere is suitable for Jet plane?
Ans: Stratosphere.
8. Which layer has suitable weather and climatic condition?
Ans: Stratosphere.
9. Which layer contains most of the ozone gas?
Ans: Ozonosphere.
10. Which layer absorbs UV radiation from the Sun?
Ans: Ozone.
11. Which is the coldest layer of the atmosphere?
Ans: Mesosphere (up to -90 Degree C)
12. In which layer of the atmosphere asteroids are destroyed?
Ans: Mesosphere.
13. Which gas is mostly responsible for ozone depletion?
Ans: CFCs.
14. Which atom produced from CFC can destroy Ozone molecule?
Ans: Chlorine atom.
15. Which layer of the atmosphere is the hottest?
Ans: Thermosphere.
16. Which layer of the atmosphere absorbs UV and the X-ray radiation from the Sun?
Ans: Thermosphere.
17. Which layer of the atmosphere reflects radio waves?
Ans: Ionosphere.
18. In which layer of the atmosphere molecules are found in ionized state?
Ans: Ionosphere.
19. In which layer of the atmosphere temperature decreases as we go up? [MP 2017]
Ans: Troposphere.
20. What is the rate of decrease in temperature in troposphere?
Ans: 6.4 Degree Celsius /1000 m or 1 Degree Celsius /165 m.
21. In which layer of the atmosphere temperature increases with altitude?
Ans: Stratosphere.
22. In which layer of the atmosphere Auroras are seen?
Ans: Thermosphere.
23. Which oxide of Nitrogen can destroy ozone?
Ans: NO and NO2.
24. Which oxide of nitrogen is produced by jet engines?
Ans: NO.
25. Which oxide of Nitrogen produced during lightening?
Ans: NO.
