A) PSCs do not react with chlorine nitrate and \[HCl\]
B) Type I clouds are formed at about \[-77{}^\circ C\] and contain solid \[HN{{O}_{3}}.3{{H}_{2}}O.\]
C) Type II clouds are formed at about \[-85{}^\circ C\] and contain some ice.
D) A tight whirlpool of wind called Polar Vortex is formed which surrounds Antarctica.
Correct Answer: A
Solution :
[a] PSCs react with chlorine nitrate and \[HCl\] to give \[HOCl\] and \[C{{l}_{2}}\].
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