Some Basic Concepts Of Chemistry Question 288

Question: The percentage of oxygen in $ NaOH $ is [CPMT 1979]

Options:

A) 40

B) 60

C) 8

D) 10

Show Answer

Answer:

Correct Answer: A

Solution:

$ \because $ 40gm NaOH contains 16gm of oxygen

$ \therefore $ 100gm of NaOH contains $ \frac{16}{40}\times 100 $ =40% oxygen.



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