Acidic hydrogen is present in

Identify most acidic hydrogen present in the above compound :

Identify most acidic hydrogen present in the above compound:

A primary amine reacts with benzene sulphonyl chloride to sulphonamide. The number of acidic hydrogens present is sulphonamide is

Fill in the blanks : In the oxo acids of halogens, hydrogen is present in …………. Group.

Intramolecular hydrogen bond is present in