The $IUPAC$ name of neopentane is

Write the prefix and suffix for the following functional groups:
$(i)$ $-COCl$
$(ii)$ $-CONH_2$
$(iii)$ $-COOR$
$(iv)$ $-CHO$
$(v)$ $-COOH$
$(vi)$ $-COX$
$(vii)$ $-CO-$
$(viii)$ $-C \equiv N$
$(ix)$ $-COO^-$

The $IUPAC$ name of the compound $CH_2 = CH - CH(CH_3)_2$ is

The correct $IUPAC$ name of $2-$ethyl$-3-$pentyne is:

The $IUPAC$ name of the following compound is:

Which of the following represents the correct $IUPAC$ name for the compounds concerned?
$(a)$ $2,2-$ Dimethylpentane or $2-$ Dimethylpentane
$(b)$ $2,4,7-$ Trimethyloctane or $2,5,7-$ Trimethyloctane
$(c)$ $2-$ Chloro$-4-$methylpentane or $4-$ Chloro$-2-$methylpentane
$(d)$ But$-3-$yn$-1-$ol or But$-4-$ol$-1-$yne