Which of the following reacts most rapidly with ethanol?

Which of the following alkyl halides gives the most complex mixture of alkenes in an $E_2$ reaction?

The major product of the following reaction is:

Monochlorination of toluene in the presence of sunlight followed by hydrolysis gives:

The following reaction is described as:
$CH_3(CH_2)_5-CH(CH_3)-Br + OH^- \rightarrow HO-CH(CH_3)(CH_2)_5CH_3 + Br^-$

Given below are two statements:
Statement $I$: $(CH_3)_3C-CH_2-Cl$ will undergo $S_N1$ reaction even though it is a primary halide.
Statement $II$: It will not undergo $S_N2$ reaction very easily even though it is a primary halide.
In the light of the above statements,choose the most appropriate answer from the options given below: