Which is the best method to separate a mixture of benzoic acid and naphthalene?

The separation of two coloured substances was done by paper chromatography. The distances travelled by solvent front,substance $A$ and substance $B$ from the base line are $3.25 \ cm$,$2.08 \ cm$ and $1.05 \ cm$ respectively. The ratio of $R_{f}$ values of $A$ to $B$ is $.........$

Which of the following processes occurs in the reaction given below $C_{(graphite)} \longrightarrow C_{(g)}$?

On the basis of which physical property does the separation of different fractions in the fractional distillation technique take place?

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

$A$ mixture of camphor and benzoic acid can be separated by: