Assertion (A) : Noble gases have very high boiling points
Reason (R) : Noble gases have strong dispersion forces hence they liquify at low temperature, hence they have high boiling point.

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(A) and (R ) are true and (R) does not explain (A)

(A) and (R) are false

(A) and (R ) are true and (R) explains (A)

(A) is true but (R) is false.

answer is C.

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Detailed Solution

Noble gases have very low boiling point due to weak van der Waals forces of attraction. Noble gases do not have inter atomic forces other than weak dispersion forces.

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