The compound X is : (a) (b) (c)

When benzene reacts with 2-methyl propene in presence of phosphoric acid, the product formed is 2- methyl-2-phenylpropane.The following reaction is shown below: Hence, the correct option is (c). 124. The major product obtained on the monobromination (with Br2/FeBr3) of the following compound A is (a) (b) (c) (d) The major product obtained on the monobromination of the following compound is para product since both the groups 3 OCH and 3 CH are ortho para directing. The following reaction is shown below: Hence, the correct option is (b). 125. Consider the following compound The relative rea