The reagent among the following that does not reduce an aryl nitro compound to an amine is:

1. H₂(excess) / Pt

2. LiAlH₄ in ether

3. Fe and HCI

4. Sn and HCI

In order to prepare a 1^o amine from an alkyl halide with the simultaneous addition of one CH₂ group in the carbon chain, the reagent used as a source of nitrogen is-

1.  Sodium amide, NaNH₂

2.  Sodium azide, NaN₃

3.  Potassium cyanide, KCN

4.  Potassium phthalimide, ${\mathrm{C}}_6{\mathrm{H}}_4(\mathrm{CO}{)}_2{\mathrm{N}}^{-}{\mathrm{K}}^{+}$

The source of nitrogen in Gabriel synthesis of amines is

(1) sodium amide, NaN₃

(3) sodium uzide, NaNO₂

(3) potassium cyanide, KCN

(4) potassium phthalimide ${\mathrm{C}}_6{\mathrm{H}}_4(\mathrm{CO}{)}_2{\mathrm{N}}^{-}{\mathrm{K}}^{+}$

Amongst the given set of reactants, the most appropriate for preparing 2^o amine is 

1.  2^o  R - Br + NH3
2.  2^oR — Br + NaCN followed by H₂/Pt
3.  1^o R —${\mathrm{NH}}_2$ + RCHO followed by H_2/Pt
4.  1^o R — Br(2 mol) + potassium phthalimide followed by $H_3$O⁺/ heat

Which reagent is most effective in converting 2-phenylpropanamide into 2-phenylpropanamine?

1. Excess H₂

2. Br₂ in aqueous NaOH

3. Iodine in the presence of phosphorus

4. LiAlH₄ in ether

The best reagent for converting, 2-phenylpropanamide into 1-phenylethanamine is .... ....

1.  Excess H₂ / Pt

2.  NaOH / ${\mathrm{Br}}_2$

3. NaBH₄ / Methanol

4.  LiAlH₄ / Ether

Hofmann bromamide degradation reaction is shown by

$$\begin{gathered} 1. {\mathrm{PhNH}}_2 \\ 2. {\mathrm{PhCONH}}_2 \\ 3. {\mathrm{PhNO}}_2 \\ 4. {\mathrm{PhCH}}_2{\mathrm{NH}}_2 \end{gathered}$$

The correct increasing order of basic strength for the following compounds is:

(I)	(II)	(III)

1. II < III < I

2. III < I < II

3. III < II < I

4. II < I < III

Methylamine reacts with HNO₂ to form-
1. CH₃-O-N=O
2. CH₃-O-CH₃
3. CH₃-OH
4. CH₃CHO

The gas evolved when methylamine reacts with nitrous acid is .............

1. NH₃
2. N₂
3. H₂
4. C₂H₆