Question

As we move to higher altitude the pressure exerted by air

• A. decreases
• B. increases
• C. remain same
• D. cannot say

Answer 1

The correct option is A

decreases

1. The gravity of the earth decreases as we move upward.
2. So, the number of air molecules also decreases as we move upward
3. As the number of air molecules decreases when we move upward so the pressure exerted by air molecules also decreases.
Hence, option (A) is the correct answer.