$A$ mixture of $ZnCl_2$ and $PbCl_2$ can be separated by

What method can be used for the separation of two volatile liquids that have a significant difference in their boiling points?

Give the technique for the separation of the following:
$(i)$ Mixture of sugar and sand
$(ii)$ Mixture of kerosene and water
$(iii)$ Mixture of benzene and common salt
$(iv)$ Mixture of liquids with boiling points $356 \, K$ and $365 \, K$
$(v)$ Mixture of aniline and camphor

Which type of mixture can be separated by methods like filtration,crystallization,and distillation? Explain.

For which one of the following mixtures is composition uniform throughout?

What is an element?