Consider the following statements with reference to structure of the Earth's atmosphere : 1. Thickness of the troposphere is greatest at the equator 2. The air temperature of the tropopause is highest above the poles 3. The temperature in troposphere decreases at the rate of 1°F for every 165 m of height Which of the statements given above is/are correct ?
- A. 1 only
- B. 1 and 2 only ✓
- C. 2 and 3 only
- D. 1, 2 and 3
Correct Answer: B. 1 and 2 only
Explanation
The troposphere is thickest at the equator. The tropopause is colder over the equator (-80°C) than over the poles (-45°C), meaning it is 'highest' in temperature above the poles. The normal lapse rate is 1°C per 165m, not 1°F.
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