A flask contains argon and chlorine in the ratio of 2 : 1 by mass. The temperature of the mixture is 27°C. The ratio of root mean square speed of the molecules of the two gases \( \left( \frac{v_{\tex

Question

A flask contains argon and chlorine in the ratio of 2 : 1 by mass. The temperature of the mixture is 27°C. The ratio of root mean square speed of the molecules of the two gases $\left( \frac{v_{\text{Ar rms}}}{v_{\text{Cl rms}}} \right)$ is: (Atomic mass of argon = 40.0 u and molecular mass of chlorine = 70.0 u)

A

$\frac{\sqrt{7}}{2}$

B

$\frac{7}{4}$

C

$\frac{7}{2}$

D

$\frac{2}{\sqrt{7}}$

Accepted Answer

$ \frac{\sqrt{7}}{2} $

Answer

$ \frac{7}{4} $

Answer

$ \frac{7}{2} $

Answer

$ \frac{2}{\sqrt{7}} $

NEET 2026 Physics Root Mean Square Speed MCQ Question

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