State, giving reasons, whether the substances printed in bold letters have been oxidised or reduced.
$C l_{2} + H_{2} S \to 2 H C l + S$

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Solution

Reduction: gain of hydrogen atom.
Chlorine gains hydrogen to form hydrogen chloride (HCl) on reacting with the hydrogen sulphide $(H_{2} S)$ . So, $C l_{2}$ gets reduced in this reaction.

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