$\begin{array}{1 1}(a)\;CH_4,\text{Tetrahedral with non-zero dipolemoment}\\(b)\;CHCl_3,\text{Tetrahedral with non-zero dipolemoment}\\(c)\;CCl_4,\text{Tetrahedral with non-zero dipolemoment}\\(d)\;CH_4,\text{Tetrahedral with zero dipolemoment}\end{array}$
