Semicarbazide, among the following, is:

1. NH2CONH2

2. NH2-NH2

3. NH2CONHNH2

4. None of the above

Subtopic:  Cyanides & Isocyanides |
 76%
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Aniline when diazotised in cold and then treated with dimethylaniline, gives a coloured product. It's structure would be :                                                                             

1.
 

2. 
 

3. 
 

4. 

Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
 75%
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Name the end product in the following series of reactions,

CH3COOH NH3ABP2O5C:

(a) CH4                                         (b) CH3OH

(c) acetonitrile                               (d) ammonium acetate

Subtopic:  Amines - Preparation & Properties |
 72%
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The type of isomerism shown by C6H5CN and C6H5NC is:

(a) position

(b) functional

(c) enantiomerism

(d) tautomerism

Subtopic:  Amines - Preparation & Properties |
 85%
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An organic compound A on reduction gives compound B which on reaction with chloroform and potassium hydroxide forms C. The compound C on catalytic reduction gives N-methylaniline. The compound A is                                                                                      [2000]

(a) nitrobenzene

(b) nitromethane

(c) methylamine

(d) aniline

Subtopic:  Urea & Nitro Compound |
 76%
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An aromatic primary amine with cold nitrous acid leads to the formation of:

(a) alcohol

(b) nitrite

(c) diazonium salt

(d) benzene

Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
 80%
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Product P in the above reaction is 

[2002]

Subtopic:  Cyanides & Isocyanides |
 70%
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In the reaction,

CH3CN+2HSnCl2HClX Boiling H2O Y, the term Y is 

[1999]

1. Acetone

2. Ethanamine

3. Acetaldehyde

4. Dimethyl amine

Subtopic:  Cyanides & Isocyanides |
 63%
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X and Y in the given reaction are:

(a) CH3COOH + (CH3)2NH

(b) CH3CONH2 + CH3OH

(c) CH3CHO + (CH3)2NH

(d) CH3COCH3 + CH3NH2

Subtopic:  Identification of Primary, Secondary & Tertiary Amines |
 75%
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Which of the following statements about primary amines is false ?

[2010]

(1) Alkyl amines are stronger bases than aryl amines

(2) Alkyl amines react with nitrous acid to produce alcohols

(3) Aryl amines react with nitrous acid to produce phenols

(4) Alkyl amines are stronger bases than ammonia

Subtopic:  Amines - Preparation & Properties |
 74%
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AIPMT - 2010
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