Q.

 Assertion : Noble gases have very low boiling points.

Reason : Noble gases being monoatomic have no interatomic forces except weak dispersion forces.

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a

Assertion is incorrect, reason is correct

b

Assertion is correct, reason is correct, reason is not a correct explanation for assertion.

c

Assertion is correct, reason is correct, reason is a correct explanation for assertion.

d

Assertion is correct, reason is incorrect

answer is A.

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Detailed Solution

Noble gases are inert in nature and exists as monoatomic gases. Weak dispersion forces exist between the gaseous molecules, thereby they have low boiling points.

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