The number of isomeric sodium salt of acid that will be required to obtain neopentane is-

1. 3                                   

2. 1

3. 4                                                  

4. 6

 

 ${\mathrm{CH}}_3\mathrm{Cl} \& {\mathrm{C}}_2{\mathrm{H}}_5\mathrm{Cl}$ undergoes Wurtz reaction to give-

The compound  among the following that undergoes reaction with ammonical ${\mathrm{AgNO}}_3$ is-

1. 

2. $C{H}_3 – CH = CH – C \equiv CH$

3. $C{H}_3– C{H}_{2}CH = CH – C{H}_2 – C{H}_3$

4. $C{H}_2 = CH – C{H}_2– C{H}_3$

The compound most likely to decolorise a solution of cold basic ${\mathrm{KMnO}}_4$ is: 

1. CH₃– CH₃                                              

2.  CH₃CH₂CH₃

3. $({\mathrm{CH}}_3{)}_4\mathrm{C}$                                                   

4. ${\mathrm{CH}}_3\mathrm{CH}$ $=$ ${\mathrm{CHCH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_3$

The compound that has the maximum melting point among the following is-

1. ${\mathrm{C}}_4{\mathrm{H}}_{10}$ $$ $$                                 

2. ${\mathrm{C}}_5{\mathrm{H}}_{12}$

3. ${\mathrm{C}}_6{\mathrm{H}}_{14}$ $$                                  

4. ${\mathrm{C}}_7{\mathrm{H}}_{16}$

$\stackrel{\stackrel{\mathrm{H}}{|}}{\mathrm{C}}{\mathrm{H}}_2-\stackrel{\stackrel{\mathrm{Cl}}{|}}{\mathrm{C}}{\mathrm{H}}_2\underset{\mathrm{alc}.}{\overset{\mathrm{NaOH}}{\to }}{\mathrm{CH}}_2={\mathrm{CH}}_2$

The most probable mechanism for the above reaction is-

1. E1                                        

2. E2

3. $E$ $1_{CB}$                                    

4. $\mathrm{\alpha -}$elimination

Nitrobenzene can be prepared from benzene by using a mixture of conc. HNO₃ and conc.

H₂SO₄. In the mixture, nitric acid acts as a/an-

1. Reducing agent

2. Acid

3. Base

4. Catalyst

A compound among the following that does not undergo Friedel-Craft's reaction easily is-

1. Cumene               

2.  Xylene

3. Nitrobenzene         

4. Toluene

The correct order of acidity among the following is:

The oxidation of benzene by V₂O₅ in the presence of air produces: