$H_{2} S O_{4}$ has very corrosive action on skin because:

it reacts with proteins

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it acts as oxidising agent

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it acts as oxidising agent and absorption of water is highly exothermic

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none of these

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Solution

The correct option is A it acts as oxidising agent and absorption of water is highly exothermic
$H_{2} S O_{4}$ acts as oxidising agent as $S$ is in $+ 6$ oxidation state and go in $+ 4, + 2, 0, - 2$ oxidation state. $H_{2} S O_{4}$ absorbs water and releases high amount of energy due to hydrogen bonding.

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