Grignard reagent shows addition on:

1. >C=O                             2. -C$\equiv$N

3. >C=S                              4. all of these

Sodium ethoxide reacts with ethyl iodide to yield:

1. CH₃CH₃                               2. C₂H₅OCH₃

3. C₂H₅OC₂H₅                          4. none of these

The set of reagents used to produce freon (CCl₂F₂) are:

What causes an alkyl iodide to darken on standing?

1. Hydrolysis                         

2. Conversion into ether

3. Liberation of iodine             

4. Formation of alkanes

In the following sequences of reactions;

CH₃CH₂CH₂I →KOH(alc.)(A)→Br₂(B)→NaNH₂/NH₃(C) the end product (C) is:

1. alkene

2. alkanol

3. alkyne

4. alkyl amine

PCI₅ reacts with propanone to give:

1. gem-Dichloride

2. vic-Dichloride

3. Propanal

4. Propane chloride

Identify (Z) in the following reaction series,

C₂H₅I$\underset{\mathrm{KOH}}{\overset{\mathrm{Alcoholic} }{\to }}$ (x) $\stackrel{{\mathrm{Br}}_2}{\to }$ (Y) $\stackrel{\mathrm{KCN}}{\to }$(Z):

1. CH₃-CH₂-CN

2. $\begin{array}{ccc}\underset{\mathrm{CN}}{\underset{|}{{\mathrm{CH}}_2}}& -& \underset{\mathrm{CN}}{\underset{|}{{\mathrm{CH}}_2}}\end{array}$

3. $\begin{array}{ccc}\underset{\mathrm{Br}}{\underset{|}{{\mathrm{CH}}_2}}& -& \underset{\mathrm{CN}}{\underset{|}{{\mathrm{CH}}_2}}\end{array}\begin{array}{}\end{array}$

4. $\begin{array}{ccc}\underset{\mathrm{Br}}{\underset{|}{\mathrm{CH}}}& =& \underset{\mathrm{CN}}{\underset{|}{\mathrm{CH}}}\end{array}$

Identity ‘Z’ in the following reaction series,
                      aq. NaOH Al2O3(Heat) HOCl
CH₃.CH₂CH₂Br→  (X)    →   (Y) →(z)

1. Mixture of
CH₃-CH-CH₂ and CH₃-CH-CH₂
           l     l                l     l
         Cl    Cl              OH Cl

2. CH₃-CH-CH₂
              l       l
             OH   Cl

3. CH₃-CH-CH₂
              l      l
             Cl   OH

4. CH₃-CH-CH₂
               l     l
              Cl   Cl

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 C₃H₆O₂. 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. CH₃CHClCH₂Cl
4. CH₂ClCH₂CH₂Cl