engineering chemistry MCQ #3398

The ratio of the rates of diffusion of two gases is 2 : 1. The ratio of their molecular masses is:

engineering chemistry MCQ #3398

  1. Question 1

    Q1. The ratio of the rates of diffusion of two gases is 2 : 1. The ratio of their molecular masses is:

    • A) 1 : 4
    • B) 4 : 1
    • C) 1 : 2
    • D) 2 : 1

    Answer: 1 : 4

    Explanation: According to Graham's Law, the ratio of rates of diffusion ∝ √(M2/M1), so M1/M2 = (1/2)² = 1/4.