BD Merit - Freelancing, BCS, Bank, Primary, Admission, NTRCA

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1. $0.25 g O_{2}, 0.25 g N_{2}, 0.25 g C O_{2}$

A. $O_{2}$
B. $O_{2}$
C. $O_{2}$
D. $O_{2}$

Answer: Option B

Explanation:

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