1.

(A) Helium is present in radio active minerals like pitchblende, monazite and clevite(R) The main commercial source of helium is natural gas

Answer»

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 :B


Discussion

No Comment Found

Related InterviewSolutions