Hofmann's rearrangement During the conversion of an amide to amine involves ..... rearrangement.

1.  Intermolecular

2.  Intramolecular

3.  Both (1) and (2)

4.  None of the above 

Subtopic:  Amines - Preparation & Properties |
 68%
From NCERT
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Aniline is a weaker base than ethylamine because:

1. lone pair of electrons of N-atom is not freely available for coordination due to resonance than in ethylamine.

2. Its b.p. is higher than that of ethylamine.

3. It does not produce a sufficient concentration of OH- ions in solution.

4. It is insoluble in water while ethylamine is soluble in water.

 

Subtopic:  Amines - Preparation & Properties |
 91%
From NCERT
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Diethyl carbonate on heating with ammonia gives:

1.  C2H5NH2

2.  C2H53N

3.  C2H52NH

4.  Urea

Subtopic:  Mechanism |
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Nitroalkane is acidic only towards:

1.  Na2CO3

3.  NaOH

3.  alcohol

4.  liquid NH3

Subtopic:  Mechanism |
 55%
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Primary, secondary, and tertiary amines may be separated by using:

1.  Ethanoyl chloride 

2.  Diethyl oxalate

3.  Thionyl chloride

4.  None of the above

Subtopic:  Identification of Primary, Secondary & Tertiary Amines |
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The name urea was given by:

1. Wohler

2. Berzelius

3. Roulle

4. Lemery

Subtopic:  Urea & Nitro Compound |
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Urea when heated a white residue is formed. Its alkaline solution when treated with few drops of CuSO4 solution gives:

1. Red colour

2. Violet colour

3. Green colour

4. Yellow colour

Subtopic:  Urea & Nitro Compound |
 59%
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The diamide of carbonic acid is:

(1) acetamide

(2) formamide

(3) benzamide

(4) urea

Subtopic:  Amines - Preparation & Properties |
 61%
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The basic character of methylamines in vapour phase is:

(1) 3°>2°>1°>NH3

(2) 2°>3°>1°>NH3

(3) 1°>2°>3°>NH3

(4) None of these

Subtopic:  Amines - Preparation & Properties |
 73%
From NCERT
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Gabriel's phthalimide reaction is used to prepare:

(1) Primary amine

(2) Secondary amine

(3) Tertiary amine

(4) All of the above

Subtopic:  Amines - Preparation & Properties |
 88%
From NCERT
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