## Q. 1.MCQ.30

Which is a pair of geometrical isomers?

I. $\begin{matrix} Cl & & & & & & Br \\ & \diagdown & & & & \diagup & \\ & & C & = & C & & \\ & \diagup & & & & \diagdown & \\ H & & & & & & Br \end{matrix}$

II. $\begin{matrix} Cl & & & & & & Br \\ & \diagdown & & & & \diagup & \\ & & C & = & C & & \\ & \diagup & & & & \diagdown & \\ H & & & & & & CH_3 \end{matrix}$

III. $\begin{matrix} Cl & & & & & & CH_3 \\ & \diagdown & & & & \diagup & \\ & & C & = & C & & \\ & \diagup & & & & \diagdown & \\ Br & & & & & & H \end{matrix}$

IV. $\begin{matrix} H & & & & & & Br \\ & \diagdown & & & & \diagup & \\ & & C & = & C & & \\ & \diagup & & & & \diagdown & \\ CL & & & & & & CH_3 \end{matrix}$

(a) I and III

(b) II and IV

(c) III and IV

(d) I and II

(b) II and IV