Hinsberg's method to separate amines is based on the use of:
(1) benzene sulphonyl chloride
(2) benzene sulphonic acid
(3) ethyl oxalate
(4) acetyl chloride
upon heating generates -
1. Nitrogen gas
2. Carbon dioxide
3. Biuret
4. Ammonium carbonate
Which of the following reagents will convert nitromethane into methylamine ?
1. Zn/HCl
2. Zn/NaOH
3. Zn/C2H5OH
4. Ni/H2
Nitrobenze on reduction with Al-Hg and water gives:
(1) azobenze
(2) aniline
(3) azoxy benzene
(4) phenylhydroxylamine
The reduction of CH3CN to CH3CH2NH2 is called:
1. Rosenmund's reduction
2. Clemmensen's reduction
3. Mendius reduction
4. Hofmann's reduction
Aniline and ethylamine resembles in:
(1) solubility
(2) action with HNO2
(3) action of Grignard reagent
(4) coupling reaction
Mendius method of preparation of amines consists of:
(1) catalytic reduction of alkyl cyanides
(2) reduction of amide with LiAlH4
(3) reduction of nitroparaffin with Sn + HCl
(4) reduction of oximes with Na + C2H5OH
The correct order of basicities of the following compounds is:
1. 2 > 1 > 3 > 4
2. 1> 3 > 2 > 4
3. 3 > 1 > 2 > 4
4. 1 > 2 > 3 > 4
A primary amine heated with CS2 in presence of excess of HgCl2 gives isothiocyanate. The reaction is called:
(1) Hofmann's bromamide reaction
(2) Hofmann's mustard oil reaction
(3) Perkin's condensation
(4) Hofmann's elimination