Give the $IUPAC$ names of the following compounds:
$(i)$ $Ph-CH_2-CH_2-COOH$
$(ii)$ $(CH_3)_2C=CH-COOH$
$(iii)$ Structure of $2-$Methylcyclopentanecarboxylic acid
$(iv)$ Structure of $2,4,6-$Trinitrobenzoic acid

Which of the following compounds has the wrong $IUPAC$ name?

Write bond line formulas for: Isopropyl alcohol,$2,3-$Dimethylbutanal,Heptan$-4-$one.

Name the following compounds according to the $IUPAC$ system:
$(i)$ $CH_3-CH(CH_2Cl)-CH(CH_2OH)-CH(CH_3)-CH_3$
$(ii)$ $CH_3-CH(CH_3)-CH_2-CH(OH)-CH(CH_2OH)-CH_3$
$(iii)$ $3-$Bromocyclohexanol (structure implied)
$(iv)$ $H_2C=CH-CH(OH)-CH_2-CH_2-CH_3$
$(v)$ $CH_3-C(CH_3)=C(Br)-CH_2OH$

The sum of sigma $(\sigma)$ and pi $(\pi)$ bonds in $Hexa-1,3-dien-5-yne$ is $...........$.

All the following $IUPAC$ names are correct except: