Assertion : $O_{3}$ acts as a powerful oxidising agent. Reason: $O_{3}$ oxidises lead sulphide to lead sulphate and iodide ions to iodine.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Due to its strong oxidizing nature, $O_{3}$ oxidises lead sulphide to lead sulphide to lead sulphate and $I^{-}$ to $I_{2}$ . Hence, vice versa is correct in the statement.
$2 O_{3} + P b S ⟶ P B S O_{4} + O_{2}$
$2 O_{3} + 2 I^{-} ⟶ I_{2} + 3 O_{2}$

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