|Consider the following statements regarding homosphere and select the correct answer using codes given below:|
|1. It extends from the earth's surface up to an altitude of 80-90km.|
|2. It has heterogeneous chemical composition.|
|3. Kennedy- Heaviside layer is an important part of ionosphere.|
|4. This part of the atmosphere is a function of revolutionary process in the atmosphere.|
A) Only 1 is correct
B) Only 1 and 2 are correct
C) Only 1, 2 and 3 are correct
D) 1, 2, 3 and 4 are correct.
Correct Answer: A
Solution :[a] Homo sphere is characterized by uniformity of chemical composition. It has three layers namely troposphere, stratosphere and mesosphere and Kennedy Heaviside layer belongs to heterosphere which extends above homosphere. This part of the atmosphere is not a function of revolutionary process of the atmosphere.
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