The order of basicity of the compounds is

Which of the following amines gives a yellow oily liquid with $HNO_{2}$?

The amine $A$,when treated with nitrous acid,gives a yellow oily substance. The amine $A$ is

Which of the following is more basic than aniline?

$A$ student has been given a compound $x$ of molecular formula $C_6H_7N$. $x$ is sparingly soluble in water. However, on addition of dilute mineral acid, $x$ becomes soluble in water. $x$ when treated with $CHCl_3$ and $KOH$ (alc.) produces $y$. $y$ has a specific unpleasant smell. On treatment with benzenesulphonyl chloride, $x$ gives a compound $z$ which is soluble in alkali. The number of different $H$ atoms present in $z$ is:

What is the expected order of basic strength of different compounds from the following in the aqueous phase?