1.

(A) 1 mole Ra^226 on alpha disintegration will give 44.8 lit of gaseous product at S.T.P (R) 1 mole Ra^226on alpha disintegration will give 1 mole radon and one mole helium

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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 the correct explanation of (A)
(A) is true but (R) is false
Both (A) and (R) are false

Answer :A


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