In the reaction sequence:

${\mathrm{CH}}_3\mathrm{CN}+2\mathrm{H}\underset{{\mathrm{SnCl}}_2}{\overset{\mathrm{HCl}}{\to }}X \stackrel{\mathrm{Boiling} {\mathrm{H}}_2\mathrm{O}}{\to } Y,$
What is the compound Y?

1. Acetone

2. Ethanamine

3. Acetaldehyde

4. Dimethyl amine

X and Y in the given reaction are:

(a) ${\mathrm{CH}}_3\mathrm{COOH} + ({\mathrm{CH}}_3{)}_2\mathrm{NH}$

(b) ${\mathrm{CH}}_3{\mathrm{CONH}}_2 + {\mathrm{CH}}_3\mathrm{OH}$

(c) ${\mathrm{CH}}_3\mathrm{CHO} + ({\mathrm{CH}}_3{)}_2\mathrm{NH}$

(d) ${\mathrm{CH}}_3{\mathrm{COCH}}_3 + {\mathrm{CH}}_3{\mathrm{NH}}_2$

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

Among the following, the strongest base is:

1. C₆H₅NH₂

2. p-NO₂-C₆H₄NH₂

3. m-NO₂-$C_6$H₄NH₂

4. CH₃CH₂NH₂

An amine reacts with ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{SO}}_2\mathrm{Cl}$ and the product is soluble in alkali, amine is:

(a) $1°$

(b) $2°$

(c) $3°$

(d) all of those

Among following reactions, the reaction does not yield an amine is-

1. 

2. 

3. 

4. 

The end product in the following sequence of reactions is

${\mathrm{C}}_2{\mathrm{H}}_5{\mathrm{NH}}_2\stackrel{{\mathrm{HNO}}_2}{\to }A \stackrel{{\mathrm{PCl}}_5}{\to }B\stackrel{{\mathrm{NH}}_3}{\to }C?$
$$

1. Ethyl cyanide

2. Ethylamine

3. Methylamine

4. Acetamide

Identfy X in the sequence,

$X \stackrel{{\mathrm{HNO}}_2}{\to }{\mathrm{C}}_3{\mathrm{H}}_8\mathrm{O} \underset{{\mathrm{H}}_2{\mathrm{SO}}_4}{\overset{{\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7}{\to }}{\mathrm{C}}_3{\mathrm{H}}_6{\mathrm{O}}_2$ :

(a) ${\mathrm{CH}}_3-\mathrm{NH}-{\mathrm{CH}}_2-{\mathrm{CH}}_3$

(b) ${\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{NH}}_2$

(c) $({\mathrm{CH}}_3{)}_3\mathrm{N}$

(d) none of the above

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

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