In the following reaction,the product $(A)$ is

Yellow dye can be prepared by a coupling reaction of benzene diazonium chloride in acidic medium with $X$. Identify $X$ from the following.

The descending order of basicity of the following amines is $:$
$(A)$ Aniline
$(B)$ $p$-Methoxyaniline
$(C)$ $p$-Nitroaniline
$(D)$ Methylamine
$(E)$ Dimethylamine
Choose the correct answer from the options given below $:$

When propionamide is treated with $Br_2$ and $NaOH$,which of the following products is obtained?

In the following compounds,the decreasing order of basic strength will be:

The major product $Z$ obtained in the following reaction scheme is