Multiple choice

Which of the following statements is/are correct about polar stratospheric clouds (PSCs)?

  1. PSCs do not react with chlorine nitrate and HCl.

  2. A tight whirlpool of wind called polar vortex is formed which surrounds Antarctica.

  3. Type II clouds are formed at about - 85˚C and contain some ice.

  4. Type I clouds are formed at about - 77˚C and contain solid HNO3.3H2O.

  5. Statements 2 and 4 are correct.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This statement is correct because Type II clouds are those which are formed at about - 85˚C and contain some ice. So this option is wrong.

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