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Question

Assertion :Both SO2 and SO3 are reducing agents Reason: Both SO2 and SO3 bleach the articles by reduction

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 D Both Assertion and Reason are incorrect
SO3 is not used as a reducing agent since it cannot donate a lone pair of electrons. The bleaching action of sulphur is based on oxidation. Since SO3 cannot be used as a reducing agent, it cannot be used to bleach articles.

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