Assertion :Glucose form hydrogensulphite addition product with $N a H {S O}_{3}$ . Reason: Glucose gives all the reactions of aldehydic group.

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 D Both Assertion and Reason are incorrect
Aldehyde group in $D -$ glucose is not completely free, it is involved in acetal formation with the hydroxyl group at $C - 5$ to give cyclic structure to it due to which glucose does not gives all the reactions of an aldehydic group and hence does not form hydrogen sulphite addition product with sodium bisulphate.
Hence, both Assertion and Reason are incorrect.

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Choose the correct option.

Assertion

Lithium sulphate does not form alums.

Reason

$L i^{+}$ is too small to form a stable lattice required for double-salt/alum formation.

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