When Cl2 gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from

Question

When Cl₂ gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from

zero to +1 and zero to $-$5

zero to $-$1 and zero to +5

zero to $-$1 and zero to +3

zero to +1 and zero to $-$3

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