Which of the following undergoes sublimation?

How will you separate a mixture of benzene and chloroform?

Who first proposed the atomic theory of matter? What does it suggest?

In the fractional distillation of crude petroleum,which of the following statements is correct?

Name the method used for the separation of a mixture of iodine and sodium chloride.

Two liquids $(A)$ and $(B)$ can be separated by the method of fractional distillation. The boiling point of liquid $(A)$ is less than the boiling point of liquid $(B)$. Which of the liquids do you expect to come out first in the distillate? Explain.