what is a polar and a non-polarsolvent??

Polar solvents, like water, have molecules in which one end of the molecule is more positive than the other

Nonpolar solvents, like carbon tetrachloride (CCl₄), benzene (C₆H₆), and diethyl ether ( CH₃CH₂OCH₂CH₃), have molecules whose electric charges are equally distributed and are not miscible with water.

 Polar solvents are water loving that is hydrophilic but non-polar solvents are oil loving that is, lipophilic.

Like dissolves like

 Polar reactants will dissolve in polar solvents. Non-polar solvents dissolve non-polar compounds best.