A compound A of formula C₃H₆Cl₂ on reaction with alkali can give B of formula C₃H₆O or C of formula C₃H₄. B on oxidation gave a compound of the formula C₃H₇O₂. C with dilute H₂SO₄ containing Hg²⁺ ion gave D of formula C₃H₆O, which with bromine and NaOH gave the sodium salt of C₂H₄O₂. Then A is :

1. CH₃CH₂CHCl₂

2. CH₃CCl₂CH₃

3. CH₂ClCH₂CH₂Cl

4. CH₃CHClCH₂Cl

Identify the product (A) in following reaction series, ${\mathrm{CH}}_3\mathrm{CN}\stackrel{\mathrm{Na}/{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}}{\to }$(X)$\stackrel{{\mathrm{HNO}}_2}{\to }$(Y)$\stackrel{\left[\mathrm{O}\right]}{\to }$(Z)$\stackrel{\mathrm{Tollens} \mathrm{reagent}}{\to }$(A) :

1. CH₃CHO

2. CH₃CONH₂

3. CH₃COOH

4. CH₃ - CH₂-NHOH

In order to accomplish the following conversion, what reagent and conditions would be required?

1. Cold sodium hydroxide

2. Hot conc. sodium hydroxide

3. Potassium tertiary butoxide and heat

4. Hot water

Which of the reagents shown below would accomplish the following transformations?

      A                                     B
(a) H3O⁺                   BH₃ - THF; H₂O₂/NaOH
(b) NaOH                   BH₃ - THF; H₂O₂/NaOH
(c) HBr in ether          Hg(OAc)₂/H₂O; NaBH₄
(d) NaNH₂                  Hg(OAc)₂/H₂O; NaBH₄

Compound  and $\underset{\left(\mathrm{Q}\right)}{{\mathrm{CH}}_3-{\mathrm{CH}}_2-\mathrm{O}-{\mathrm{CH}}_2-{\mathrm{CH}}_3}$ can be differentiated by

(1) H₃O^⊕, Na

(2) H₃O^⊕, Tollens' test

(3) H₃O^⊕, Fehling test

(4) All of these

Give test to differentiate 1,1-dichloroethane and 1, 2-dichloroethane:
1. 2,4-DNP then aq. KOH

2. aq. KOH then 2, 4-DNP

3. NaHSO₃

4. Lucas reagent

$\mathrm{In} \mathrm{the} \mathrm{dehydration} \mathrm{reaction},$
${\mathrm{CH}}_3{\mathrm{CONH}}_2\stackrel{{\mathrm{P}}_2{\mathrm{O}}_5}{\to }{\mathrm{CH}}_3\mathrm{C}\equiv \mathrm{N},$
$\mathrm{the} \mathrm{hybridization} \mathrm{state} \mathrm{of} \mathrm{carbon} \mathrm{changes} \mathrm{from}:$

(1) sp³ to sp²

(2) sp to sp

(3) sp² to sp

(4) sp to sp³

The reagent used in dehydrohalogenation process is:

(1) alcoholic KOH

(2) NaNH₂

(3) C₂H₅ONa

(4) all of these

The reagent used in dehalogenation process is:

1. KOH alc.

2. Zn dust+ alc.

3. Na

4. KOH(aq)

$\mathrm{R}-\mathrm{COOH}$$\to$RCH₂OH. This mode of reduction can be effected only by:

1. NaBH₄

2. KMnO₄

3. LiAIH₄

4. All of the above