An alkene 'X' of the formula C4H8 on ozonolysis produced acetone and formaldehyde. The product obtained when 'X' reacts with HBr is
n - butyl bromide
isobutyl bromide
sec. butyl bromide
tert. butyl bromide
Predict the product obtained by chlorination of tert – butyl bromide.
Major product formed during the reaction between isobutyl bromide and benzene in presence of anhydrous AlCl3 is :