Rearrange the following (I to IV) in the order of increasing masses and choose the correct answer from (a), (b), (c) and (d) (Atomic mass: N=14, O=16, Cu=63)

Question: Rearrange the following (I to IV) in the order of increasing masses and choose the correct answer from (a), (b), (c) and (d) (Atomic mass: N=14, O=16, Cu=63).

I. 1 molecule of oxygen

II. 1 atom of nitrogen

III. 1 x 10^-10 g molecular weight of oxygen

IV. 1 x 10^-10 g atomic weight of copper

(a) II<I<III<IV 

(b) IV<III<II<I

(c) II<III<I<IV 

(d) III<IV<I<II

Correct Answer: (a) II<I<III<IV