Q. Which of the following is / are correct observations about various kinds of clouds?
  1. Cirrus clouds are usually composed of ice crystals
  2. Cumulus clouds develop due to convective uplift
  3. A funnel cloud generally forms at ground surface
Select the correct option from the codes given below:

Answer: Only 1 & 2
Notes:
  1. Cirrus clouds are usually composed of ice crystals - Correct. Cirrus clouds form at high altitudes where temperatures are below freezing, hence they contain ice crystal formations.
  2. Cumulus clouds develop due to convective uplift - Correct. Cumulus clouds are product of rising thermals and convection currents that cause water vapor to condense.
  3. A funnel cloud generally forms at ground surface - Incorrect. Funnel clouds extend downwards from the cloud base of a cumulonimbus (thunderstorm), but do not reach the ground initially. If they reach the ground they become a tornado.

This question is part of UPSC Daily 20 MCQ Series Course on GKToday Android app.