Predict the alkenes that would be formed by dehydrohalogenation with sodium ethoxide and ethanol. Predict major alkenes :
(a) 2-chloro-2-methylbutane
(b) 3-bromo-2, 2, 3-trimethylpentane

Predict all the alkenes that would be formed by dehydrohalogenation of the following halides with sodium ethoxide in ethanol and identify the major alkene: (i) 1-Bromo-1-methylcyclohexane , (ii) 2-Chloro-2-methylbutane (iii) 2,2,3-Trimethyl-3-bromopentane