In polythionic acid, H 2   S x O 6 ( x = 3 to 5 ) the oxidation state(s) of sulphur is/are:

1. $+6$ only
2. $+5$ only
3. $0$ and $+5$ only
4. $+3$ and $+5$ only

Asked in: JEE Main 2021 (27 Aug Shift 1)

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