Which of the following is a gem-dihalide?

Which of the following is not an example of an allylic halide?

Which of the following is an example of a vinylic halide?

Write structures of the following compounds:
$(i)$ $2-$Chloro$-3-$methylpentane
$(ii)$ $1-$Chloro$-4-$ethylcyclohexane
$(iii)$ $4-$tert-Butyl$-3-$iodoheptane
$(iv)$ $1,4-$Dibromobut$-2-$ene
$(v)$ $1-$Bromo$-4-$sec-butyl$-2-$methylbenzene.

Which of the following compounds is not chiral?

In chloroethane,the carbon bearing halogen is bonded to ... hydrogen $(s)$. It is called ...... alkyl halide.