Question

When Cl, gas reacts with hot and concentrated
sodium hydroxide solution, the oxidation number
of chlorine changes from:
(1) Zero to -1 and zero to +3
(2) Zero to +1 and zero to -3
(3) Zero to +1 and zero to -5
(4) Zero to -1 and zero to +5
I
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Answer 1

Answer:

when chlorine reacts with hot and concentrated sodium hydroxide solution it produces cl^- and clo3^-

therefore correct option is 4