1.

(A) : In the separation of inert gases, by Dewar's method He gas does not absorbed on activated charcoal (R ) : Among noble gases helium has less atomic size The correct answer is

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Both (A) and (R ) are TRUE and (R ) is the CORRECT EXPLANATION of (A)
Both (A) and (R )are true and (R ) is not correct explanation of (A)
(A) is true but (R ) is FALSE
(A) is false but (R ) is true

Answer :A


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