$\begin{array}{1 1} \text{(a) (i) Because the forces of attraction set up between haloalkanes and the organic solvents molecules are of same strength as the forces of attraction being broken. (ii) An equimolar mixture of a pair of enantiomers is called racemic mixture.} \\ \text{(b) (i) Because the forces of attraction set up between haloalkanes and the organic solvents molecules are greater than the forces of attraction being broken. (ii) An equimolar mixture of a pair of enantiomers is called racemic mixture.} \\ \text{(c) (i) Because the forces of attraction set up between haloalkanes and the organic solvents molecules are greater than the forces of attraction being broken. (ii) non-mirror image non-identical stereoisomers is called racemic mixture.} \\\text{(d) none of these} \end{array} $