The correct statements(s) concerning the structures $\mathrm{E}, \mathrm{F}$ and $\mathrm{G}$ is (are):

The correct acidity order of the following is:

In the following carbocation; $-\mathrm{H}/-{\mathrm{CH}}_3$ that is most likely to migrate to the positively charged carbon is:-

The correct order of acidity for the following compounds is

The order of basicity among the following compounds is

Consider the acidity of the carboxylic acids:

$\left(\mathrm{i}\right) \mathrm{PhCOOH}$ 

$\left(\mathrm{ii}\right) \mathrm{o}-{\mathrm{NO}}_2{\mathrm{C}}_6{\mathrm{H}}_4\mathrm{COOH}$ 

$\left(\mathrm{iii}\right) \mathrm{p}-{\mathrm{NO}}_2{\mathrm{C}}_6{\mathrm{H}}_4\mathrm{COOH}$ 

$\left(\mathrm{iv}\right) \mathrm{m}-{\mathrm{NO}}_2{\mathrm{C}}_6{\mathrm{H}}_4\mathrm{COOH}$