1. Atmosphere is odourless, tasteless and colourless |
2. Atmosphere is held to the earth by its gravitational force and is an integral part of the earth. |
3. Hydrogen present in the air is a heavy gas and is confined to the lower layers of the atmosphere only. |
4. Dust particles present in the atmosphere act as hydroscopic matter. |
A) 1 and 2 only
B) 1, 2 and 3 only
C) 2, 3 and 4 only
D) 1, 2 and 4 only
Correct Answer: D
Solution :
Hydrogen is a light gas and extends to 1100 km over heavier gases.You need to login to perform this action.
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