gs1medium

With reference to “water vapour”, which of the following statements is/are correct?

  1. 1.It is a colourless and odourless gas.
  2. 2.It is the primary cause of the greenhouse effect.
  1. A.1 only
  2. B.2 only
  3. C.Both 1 and 2
  4. D.Neither 1 nor 2
▶ Answer & Explanation

Correct answer: A. 1 only

Water vapour is indeed a colourless and odourless gas, making it imperceptible to human senses. Furthermore, it is the most significant greenhouse gas in Earth's atmosphere, absorbing and re-emitting infrared radiation, which plays a crucial role in regulating the planet's temperature.

Source: UPSC gs1 2024

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