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
B.
methyl orange
The reaction of diazotised sulphanilic acid and N,N-dimethyl aniline forms methyl orange as,
Methyl amine reacts with methyl iodide. For completion of reaction, how many moles of methyl iodide are required ?
1
2
3
4