Which reaction causes depletion of Ozone layer?

$C F_{2} C l_{2} (g) u l t r a v i o l e t - ----- \to C F_{2} C l (g) + C l (g)$

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$N O (g) + O_{3} \to N O_{2} (g) + O_{2} (g)$

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$N O_{2} (g) + O_{3} \to N O_{3} (g) + O_{2} (g)$

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$C O_{2} (g) + O_{3} \to C O (g) + 2 O_{2} (g)$

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Solution

The correct options are
A
$C F_{2} C l_{2} (g) u l t r a v i o l e t - ----- \to C F_{2} C l (g) + C l (g)$

B
$N O (g) + O_{3} \to N O_{2} (g) + O_{2} (g)$

C
$N O_{2} (g) + O_{3} \to N O_{3} (g) + O_{2} (g)$

Freons forms free-radical and fuel of plane which is Nitric Oxide forms free-radical and the reactions release oxygen by destroying ozone.

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\frac{d [O_{3}]}{d t} = \frac{K {[O_{3}]}^{2}}{[O_{2}]}

O_{3}

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O_{3} \Leftrightarrow O_{2} + O (f a s t) O + O_{3} \to 2 O_{2} (s l o w)

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