When acetylene is passed through $\mathrm{dil}.{\mathrm{H}}_2{\mathrm{SO}}_4$ in presence of ${\mathrm{HgSO}}_4$, the compound formed is

1. ether 

2. ketone

3. acetic acid 

4. acetaldehyde

Nitrobenzene on reaction with conc. HNO₃/H₂SO₄ at 80-100$°$C forms -

1. 1,2-Dinitrobenzene

2. 1,3-Dinitrobenzene

3. 1,4-Dinitrobenzene

4. 1,2,4-Trinitrobenzene

In Friedel-Craft's synthesis of toluene, the reactants in addition to anhydrous AlCl₃ are           

1. C₆H₅Cl + CH₄

2. C₆H₅Cl + CH₃Cl

3. C₆H₆ + CH₄

4. C₆H₆ + CH₃Cl

Benzene reacts with ${\mathrm{CH}}_3\mathrm{Cl}$ in the presence of anhy. ${\mathrm{AlCl}}_3$ to form

1. toluene

2. chlorobenzene

3. benzylchloride

4. xylene

3-Hexyne can be converted to trans-3-Hexene by the action of:

1. ${\mathrm{H}}_2$ - Pd/ ${\mathrm{BaSO}}_4$                       

2. Li-Liq. ${\mathrm{NH}}_3$

3. ${\mathrm{H}}_2$ - Pt ${\mathrm{O}}_2$                               

4. ${\mathrm{NaBH}}_4$

A compound having the shortest carbon-carbon bond length among the following is :

1. Benzene                                 

2. Ethene

3. Ethyne                                   

4. Ethane

Reaction of HBr with propene in the presence of peroxide gives

1. iso-propyl bromide

2. 3-bromo propane

3. allyl bromide

4. n-propyl bromide

The reaction of toluene with ${\mathrm{Cl}}_2$ in the presence of ${\mathrm{FeCl}}_3$ gives 'X' and reaction in presence of light gives 'Y'. Thus, 'X' and  'Y' are

1. X = benzal chloride, Y= o-chlorotoluene

2. X = m-chlorotoluene, Y= p-chlorotoluene

3. X = o and p-chlorotoluene, Y = trichloromethyl benzene

4. X = benzal chloride, Y = m-chlorotoluene

In the reaction, ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{CH}}_3\stackrel{\mathrm{Oxidation}}{\to }$A $\stackrel{\mathrm{NaOH}}{\to }$B$\underset{∆}{\overset{\mathrm{Soda} \mathrm{lime}}{\to }}$C 

the product C is:

1. ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{OH}$ 

2. ${\mathrm{C}}_6{\mathrm{H}}_6$

3. ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{COONa}$

4. ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{ONa}$

Which is the most suitable reagent among the following to distinguish compound (III) from rest of the compounds?

I. ${\mathrm{CH}}_3-\mathrm{C}\equiv \mathrm{C}-{\mathrm{CH}}_3$

II. ${\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_3$

III. ${\mathrm{CH}}_3-{\mathrm{CH}}_2-\mathrm{C}\equiv \mathrm{CH}$

IV. ${\mathrm{CH}}_3-\mathrm{CH}={\mathrm{CH}}_2$