Home PYQs UPPSC UPPSC MCQs Prelims 2020 (GS Paper I)

Question

Without green house effect, the average temperature of earth surface would be:

  1. 0°C
  2. -18°C
  3. 5°C
  4. -20°C

Answer:

Option B: -18°C

Detailed Solution:

The correct answer is “-18°C”.

Without the greenhouse effect, the average temperature of the Earth's surface would be around -18°C. The greenhouse effect, caused by greenhouse gases in the atmosphere, helps to keep the Earth's surface temperature at a more habitable average of about 15°C.