The structural formula of an ester is

Write the structural formula of the corresponding alcohol and acid.

Give the name of the following functional group:

Name the functional group present in the following compound: 

${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{COOH}$
 

Name the functional group present in the following compound: 

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

Name the functional group present in the following compound: 

${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{OH}$

Give an example each of: 
(i) Open chain 
(ii) Branched chain and

(iii) Ring chain of hydrocarbons.