Question

Two gases are enclosed in a container at constant temperature. One of the gases, which is diatomic, has relative molecular mass eight times the other, which is monoatomic. The ratio pf the rms speed of the molecules of the monoatomic gas to that of the molecules of the diatomic gas is

(a) 8 

(b) 4 

(c) 2 √2

(d) 2

Answer 1

(c) 2 √2

The rms speed is independent of the atomicity of the gas, v =\(\sqrt{\frac{3RT}{M}}\)