STATEMENT-1 : A lighter gas diffuses mor rapidly than a heavier gas.
STATEMENT-2 : At a given temperature, the rate of diffusion of a gas is inversely proportional to density.

Options

A. If both (`A`) and (`R`) are correct and (`R`) is the correct explanation of (`A`).
B. If both (`A`) and (`R`) are correct, but (`R`) is not the correct explanation of (`A`).
C. If (`A`) is correct, but (`R`) is incorrect.
D. If (`A`) is incorrect, but (`R`) is correct.

Answer

A, B, C, D

Explanation

Rate of diffusion `prop sqrt((1)/("Molecular mass"))`. Hence lighter gas moves rapidly than heavier gas molecules.