Predict the major product of the sulphuric acid catalysed dehydration of the following alcohols:

${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{CH}\left(\mathrm{OH}\right){\mathrm{CH}}_3$

Predict the major product of the sulphuric acid catalysed dehydration of the following alcohols:

${\left({\mathrm{CH}}_3\right)}_2\mathrm{C}\left(\mathrm{OH}\right)\mathrm{CH}{\left({\mathrm{CH}}_3\right)}_2$

Predict the major product of the sulfuric acid catalyzed dehydration of the following alcohol:

${\left({\mathrm{CH}}_3\right)}_3{\mathrm{CCH}}_2\mathrm{OH}$

The major product $\mathrm{P}$formed in the following reaction is:

The major product $\mathrm{Q}$ formed in the following reaction is:

If the starting material is labelled with deuterium as indicated, predict the number of deuterium present in the major elimination product:

If the starting material is labelled with deuterium as indicated, predict the number of deuterium atoms present in the major elimination product?