Hydrocarbons

The major product formed when 2- Methylpropene reacts with dilute $\mathrm{H}_2 \mathrm{SO}_4$ is tert. butyl alcohol.

The Electrophilic addition to an unsymmetrical alkene always occurs through the formation of a more stable Carbanion intermediate.

Between the two alkenes - (i) $\left(\mathrm{CH}_3\right)_2-\mathrm{C}=\mathrm{CH}-\mathrm{CH}_3$ and (ii). $\mathrm{C}_6 \mathrm{H}_5-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_2-\mathrm{CH}_3$, compound (i) will show geometrical isomerism

Greater the number of alkyl groups attached to the double bonded Carbon atoms, the less stable is the alkene.