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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
States of Matter

NTA Abhyas 2020 · Chemistry · States of Matter

The rates of diffusion of gases A and B of molecular weight 36 and...

The rates of diffusion of gases A\text{A} and B\text{B} of molecular weight 36\text{36} and 64\text{64} are in the ratio

Options

  1. A9 : 16
  2. B4 : 3
  3. C3 : 4
  4. D16 : 9

Correct answer

B. 4 : 3

Step-by-step solution

rArB=MBMA=6436=43\dfrac{{r}_{A}}{{r}_{B}} = \sqrt{\dfrac{{M}_{B}}{{M}_{A}}} = \sqrt{\dfrac{6 4}{3 6}} = \dfrac{4}{3}

rA:rB=4:3{r}_{A} \text{:} {r}_{B} = 4 \text{:} 3.
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