Assertion (A): H₂S has higher boiling point than H₂O.
Reason (R): Molecular mass of H₂S is more than H₂O.

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A are R are true, R is the correct explanation of A

A and R are true, but R is not the correct explanation of A

A is false but R is true

A is true but R is false

answer is D.

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Detailed Solution

Water forms strong intermolecular hydrogen bonding. Hydrogen sulphide does not. As we know, stronger the intermolecular forces, higher will be boiling point. Hence, water has higher boiling point over hydrogen sulfide.

Molecular mass of H₂S (34) is more than H₂O (18).

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