67. N-nitrosoamine when warmed with phenol and conc. sulphuric acid gives green colouration. The amine is a.secondary amine b.p-amine c.tert. amine d.quaternary salt
Nitrosamines are water soluble yellow oils and when warmed with phenol and few drops of conc. ${H_2}S{O_4}$ Produce a green color solution which turns blue on adding alkali. This reaction is called Liebermann's nitroso reaction. Tertiary amine do not react with nitrous acid.
