You are given an impure sample of sodium chloride containing impurity of some chalk. How will you purify it ?

How will you purify impure benzene ?

How will you purify impure naphthalene ?

How will you purify an impure sample of (i) Camphor (ii) aniline ?

On analysing an impure sample of sodium chloride , the percentage of chloride was found to be 45.5 what is the percentage of pure sodium chloride in the sample?

On analysing an impure sample of sodium chloride, the percentage of chloride was found to be 45.5 what is the percentage of pure sodium chloride in the sample?