$A$ mixture of $NH_4Cl$ and $NaCl$ can be separated by

Explain the concept of a compound.

How will you separate a mixture of benzene and chloroform?

$A$ mixture of sodium chloride and ammonium chloride is separated by:

Separation of $Acetone$ and $Benzene$ from their mixture is carried out by

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 $.........$