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 |
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AIPMT - 2010
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Among the following, the strongest base is:

1. C6H5NH2

2. p-NO2-C6H4NH2

3. m-NO2-C6H4NH2

4. CH3CH2NH2

Subtopic:  Amines - Preparation & Properties |
 79%
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An amine reacts with C6H5SO2Cl and the product is soluble in alkali, amine is:

(a) 1°

(b) 2°

(c) 3°

(d) all of those

Subtopic:  Identification of Primary, Secondary & Tertiary Amines |
 87%
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Among following reactions, the reaction does not yield an amine is-

1. 

2. 

3. 

4. 

Subtopic:  Cyanides & Isocyanides |
 66%
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The end product in the following sequence of reactions is

C2H5NH2HNO2A PCl5BNH3C?

1. Ethyl cyanide

2. Ethylamine

3. Methylamine

4. Acetamide

Subtopic:  Amines - Preparation & Properties |
 83%
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Identfy X in the sequence,

X HNO2C3H8O H2SO4K2Cr2O7C3H6O2 :

(a) CH3-NH-CH2-CH3

(b) CH3-CH2-CH2-NH2

(c) (CH3)3N

(d) none of the above

Subtopic:  Identification of Primary, Secondary & Tertiary Amines |
 85%
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CH3CH2NH2 contains a basic NH2 group, but CH3CONH2 does not, because;

1. Acetamide is amphoteric in nature

2. In CH3CH2NH2 the electron pair on N-atom is delocalized by resonance

3. In CH3CH2NH2 there is no resonance, while in acetamide the lone pair of electron on N-atom is delocalized and therefore less available for protonation

4. None of the above

Subtopic:  Diazonium Salts: Preparation, Properties & Uses |
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Tertiary nitro compounds cannot show tautomerism because:

(a) they are very stable

(b) isomerises to give sec. nitro compounds

(c) do not have labile H-atom

(d) they are highly eactive

Subtopic:  Identification of Primary, Secondary & Tertiary Amines |
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Aniline and ethylamine resembles in:

1. Solubility

2. Action with HNO2

3. Action of Grignard reagent

4. Coupling reaction

Subtopic:  Cyanides & Isocyanides |
 56%
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A secondary amine is:

1. A compound with two -NH2 groups

2. A compound with 2 carbon atoms and a -NH2 group

3. A compound with a -NH2 group on the carbon atom in number 2 position

4. A compound in which 2 of the hydrogens of NH3 have been replaced by alkyl or aryl groups

Subtopic:  Identification of Primary, Secondary & Tertiary Amines |
 77%
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