Identify the correct structural formula of benzene.

The IUPAC name of the following compound is:

When water gas is mixed with half its volume of hydrogen and the mixture is compressed 300 atmospheric pressure and passed over $\mathrm{ZnO}.{\mathrm{Cr}}_2{\mathrm{O}}_3$ catalyst a colourless liquid is obtained which is used as a solvent for paint and varnishes. The liquid will be 

According to the IUPAC system which type of compound is shown by the given structure:

IUPAC name of the following compound will be

Identify and name of the following compound:

Observe the correlation in the first pair and complete the second pair.

${\mathrm{CH}}_3\mathrm{OH}$ : Methanol. : :${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{COOH}$ : _____.  

Identify and name the following compound.

${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CHO}$.

Which of the following is the ketone functional group, $\mathrm{R}=(-{\mathrm{CH}}_3)$, $\mathrm{R}$ is Alkyl group.