How will you prepare the following using Grignard reagent?

Allyl alcohol

Identify the product in the following reaction. Write the $\mathrm{IUPAC}$ name and mention the mechanism involved in the reaction.

$\mathrm{Cyclopentanol}\underset{△}{\overset{ {\mathrm{H}}_2{\mathrm{SO}}_4 }{\to }}?$

Identify the product in the following reaction. Write the $\mathrm{IUPAC}$ name and mention the mechanism involved in the reaction.

$\mathrm{Butan}-1-\mathrm{ol}\underset{{\mathrm{H}}_2{\mathrm{SO}}_4}{\overset{ \mathrm{NaBr} }{\to }}?$

Identify the product in the following reaction. Write the $\mathrm{IUPAC}$ name of the product.

$\mathrm{Neopentyl} \mathrm{alcohol}\stackrel{ {\mathrm{PCl}}_5 }{\to }?$