Which of the following will form only one oxime on reaction with ${\mathrm{NH}}_2\mathrm{OH}$ solution?

Incorrect statement about the compounds $\mathrm{I}, \mathrm{II}$ is

$\left(\mathrm{I}\right)$ 

$\left(\mathrm{II}\right)$ 

$\left(\mathrm{III}\right)$

Which of the following alkenes can generate optically active compounds upon hydrogenation?

The correct order of the increasing basic nature of the following base is

Among the compounds

the order of basicity is

The order of basicity of

in water is: