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Sulphuric Acid

Assertion :In...

Question

Assertion :In aqueous solution, $S O_{2}$ reacts with $H_{2} S$ forming sulphur. Reason: $S O_{2}$ is an effective reducing agent.

A

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

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B

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

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C

Assertion is correct but Reason is incorrect.

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D

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.
$S O_{2}$ is an effective reducing agent.
It is also an effective oxidizing agent.
It oxidizes $H_{2} S$ to S.
$2 H_{2} S + S O_{2} \to 2 H_{2} O + 3 S ↓$ .
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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