The indicator that is obtained by coupling the diazonium salt of sulphanilic acid with N, N-dimethyl aniline is
phenanthroline
methyl orange
methyl red
phenolphthalein
Methyl amine reacts with methyl iodide. For completion of reaction, how many moles of methyl iodide are required ?
1
2
3
4
Primary amine (RNH2) reacts with nitrous acid to give
ROH
ROR
None of these
B.
ROH
1 ° aliphatic amines on reaction with HNO2 form alcohol and evolve N2.