Predict all the alkenes that would be formed by dehydrohalogenation of the following halides with sodium ehoxide in ethanol and indentify major alkene.
a. `I-` Bromo `-1-` mehylecyclohexane
b. Chcolhexylmethyl bromide
c. `2-` Chloro `-2-` ilutane
d. `3-` Bromopent `1-` ene
e. `2,2,3-` Trimethyl `3-` bromopentane.
