1.

(A): Helium is found in radioactive minerals (R): During alpha-day, helium is formed and is occluded in radioactive minerals

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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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