1.

The number of air molecules in a `(5m xx 5m xx 4m)` room at standard temperature and pressure is of the order ofA. `6 xx 10^(23 )`B. `3 xx 10^(24 )`C. `3 xx 10^(27)`D. `6 xx 10^(30 )`

Answer» Correct Answer - C


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