Which of the following bases is the strongest in an aqueous medium?

1. CH3NH2
2. NCCH2NH2
3. (CH3)2NH
4. C6H5NHCH3

Subtopic:  Mechanism |
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Acid anhydrides on reaction with primary amines give

1.  amide

2.  imide

3.  secondary amine

4.  imine

Subtopic:  Mechanism |
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Match the reactions given in Column I with the statements given in Column II.

Column I Column II
A. Ammonolysis 1. Amine with a lesser number of carbon atoms
B. Gabriel phthalimide synthesis 2. Detection test for primary amines.
C. Hofmann bromamide reaction 3. Reaction of phthalimide with KOH and R—X
D. Carbylamine reaction 4. Reaction of alkyl halides with NH3

Codes

A B C D
1. 2 3 4 1
2. 3 1 4 2
3. 1 4 3 2
4. 4 3 1 2
Subtopic:  Diazonium Salts: Preparation, Properties & Uses | Mechanism |
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Assertion (A): Acylation of amines gives a monosubstituted product whereas alkylation of amines gives a polysubstituted product.
Reason (R): Acyl group sterically hinders the approach of further acyl groups.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.
 
Subtopic:  Mechanism |
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