The percentage of oxygen in NaOH is _____. (A) 8 (B) 10 (C) 40 (D) – InterviewSolution

1.

The percentage of oxygen in NaOH is _____. (A) 8 (B) 10 (C) 40 (D) 60

Answer»

Correct option: (C) 40

∵ 40 gm NaOH contains 16 gm of oxygen

∴ 100 gm of NaOH contains \(\cfrac{16}{40}\) x 100 = 40% oxygen.

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