Question

Assertion (A) In steam distillation, the liquid boils when the sum of vapour pressures due to the organic liquid $\left(p_1\right)$ and that due to water $\left(p_2\right)$ becomes equal to the atmospheric pressure $(p)$, i.e. $p=p_1+p_2$.
Reason (R) $p_1$ is lower than $p$, the organic liquid vapourises at lower temperature than its boiling point.

• A. Both $A$ and $R$ are correct; $R$ is the correct explanation of $A$.
• B. Both $A$ and $R$ are correct; $R$ is not the correct explanation of $A$.
• C. $A$ is correct; $R$ is incorrect.
• D. $R$ is correct; $A$ is incorrect.

Answer 1

Answer: (B)

Correct answer is (b) Both $A$ and $R$ are correct; $R$ is not the correct explanation of $A$.