Which of the following methods of preparation of amines will not give the same number of carbon atoms in the chain of amines as in the reactant?
1. | Reaction of nitrile with LiAlH4 |
2. | Reaction of amide with LiAlH4 followed by treatment with water |
3. | Heating alkyl halide with potassium salt of phthalimide followed by hydrolysis |
4. | Treatment of amide with bromine in an aqueous solution of sodium hydroxide. |
The compound(s) among the following that is/are not typically synthesized using the Sandmeyer reaction:
(a) Chlorobenzene
(b) Bromobenzene
(c) Iodobenzene
(d) Fluorobenzene
Choose the correct option:
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Reduction of nitrobenzene by which of the following reagent gives aniline?
(a) Sn/HCl
(b) Fe/HCl
(c) H2-pd
(d) Sn/NH4OH
Choose the correct option
1. (a, b, c)
2. (b, c, d)
3. (a, c, d)
4. (a, b, d)
Which of the following species are involved in the carbylamine test?
a. R—NC
b. CHCl3
c. COCl2
d. NaNO2 + HCl
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
The reagents that can be used to convert benzene diazonium chloride to benzene are
a. SnCl2 / HCI
b. CH3CH2OH
c. H3PO2
d. LiAlH4
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Choose the correct option
Arenium ion involved in the bromination of aniline is ......
Choose the correct option
1. (a, b, c)
2. (b, c, d)
3. (a, c, d)
4. (a, b, d)
Which of the following amines can be prepared by Gabriel synthesis?
a. Isobutyl amine
b. 2-phenylethylamine
c. N-methyl benzylamine
d. Aniline
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Which of the following reactions is/are correct?
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)
Under which of the following reaction conditions, aniline gives p-nitro derivative as the major product?
a. | Acetyl chloride/pyridine followed by reaction with conc. H2SO4 + conc.HNO3 |
b. | Acetic anhydride/pyridine followed by conc. H2SO4 + conc. HNO3 |
c. | Dil. HCI followed by reaction with conc. H2SO4 + conc. HNO3 |
d. | Reaction with conc. HNO3 + conc. H2SO4 |
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)