Among the isomeric alkanes of molecular formula ${\mathrm{C}}_5{\mathrm{H}}_{12}$, identify the one that on photochemical chlorination yields three isomeric monochlorides.

Name the following halide according to IUPAC system and classify it as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halide:

$\mathrm{C}{\mathrm{H}}_3\mathrm{C}{\mathrm{H}}_2\mathrm{C}\mathrm{H}\left(\mathrm{C}{\mathrm{H}}_3\right)\mathrm{C}\mathrm{H}\left({\mathrm{C}}_2{\mathrm{H}}_5\right)\mathrm{C}\mathrm{l}$

Name the following halide according to $\mathrm{IUPAC}$ system and classify it as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halide:

$\mathrm{C}{\mathrm{H}}_3\mathrm{C}\mathrm{H}=\mathrm{C}\left(\mathrm{Cl}\right){\mathrm{CH}}_2\mathrm{CH}{\left(\mathrm{C}{\mathrm{H}}_3\right)}_2$

Write the structure of the following organic halogen compound :

$4$-tert-Butyl-$3$-iodoheptane

How will you bring about the following conversion?

Toluene to benzyl alcohol