Among the following amines, the strongest Bronsted base is:

1.		2.
3.		4.

The correct decreasing order of basic strength of the following species is.

${\mathrm{H}}_2\mathrm{O},{\mathrm{NH}}_3,{\mathrm{OH}}^{-},{\mathrm{NH}}_2^{}$

$1.<mspace\; width="1em"></mspace>{\mathrm{NH}}_2^{-}>{\mathrm{OH}}^{-}>{\mathrm{NH}}_3>{\mathrm{H}}_2\mathrm{O}$
$2.<mspace\; width="1em"></mspace>{\mathrm{OH}}^{-}>{\mathrm{NH}}_2^{-}>{\mathrm{H}}_2\mathrm{O}>{\mathrm{NH}}_3$
$3.<mspace\; width="1em"></mspace>{\mathrm{NH}}_3>{\mathrm{H}}_2\mathrm{O}>{\mathrm{NH}}_2^{-}>{\mathrm{OH}}^{-}$
$4.<mspace\; width="1em"></mspace>{\mathrm{H}}_2\mathrm{O}>{\mathrm{NH}}_3>{\mathrm{OH}}^{-}>{\mathrm{NH}}_2^{-}$

Which of the following should be most volatile?

I.	\(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{NH}_2\)
II.	\(\left(\mathrm{CH}_3\right)_3 \mathrm{~N}\)
III.
IV.	\(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_3\)

Which of the following methods of preparation of amines will not give the same number of carbon atoms in the chain of amines as in the reactant?

The compound(s) among the following that is/are not typically synthesized using the Sandmeyer reaction:

(a) Chlorobenzene

(b) Bromobenzene

(c) Iodobenzene 

(d) Fluorobenzene

Choose the correct option:
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)

Reduction of nitrobenzene by which of the following reagent gives aniline?

(a) Sn/HCl
(b) Fe/HCl
(c) H₂-pd
(d) Sn/NH₄OH

Choose the correct option
1. (a, b, c)
2. (b, c, d)
3. (a, c, d)
4. (a, b, d)

Which of the following species are involved in the carbylamine test?

a.  R—NC
b.  CHCl₃
c.  COCl₂
d.  NaNO₂ + HCl

Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)

Which of the following reagents can be used to convert benzene diazonium chloride to benzene?

a. SnCl₂ / HCI
b. CH₃CH₂OH
c. H₃PO₂
d. LiAlH₄

Choose the correct option:
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)

Choose the correct option

Arenium ion involved in the bromination of aniline is ......

Choose the correct option
1. (a, b, c)
2. (b, c, d)
3. (a, c, d)
4. (a, b, d)