The compound that has least hindered rotation around carbon-carbon bond is-

1.	Ethane	2.	Ethylene
3.	Acetylene	4.	Hexachloroethane

A compound having the highest boiling point among the following is - 

 [A] and [B]  in the  mentioned reaction are respectively -

1. Alc. KOH and ${\mathrm{NaNH}}_2$

2. ${\mathrm{NaNH}}_2$ and Lindlar catalyst

3. ${\mathrm{NaNH}}_2$ and alcoholic KOH

4. Lindlar catalyst and ${\mathrm{NaNH}}_2$

Benzene reacts with ${\mathrm{CH}}_3\mathrm{COCl}$ in the presence of anhydrous ${\mathrm{AlCl}}_3$ to give

(1) ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{CH}}_3$

(2) ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{Cl}$

(3) ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{O}}_2\mathrm{Cl}$

(4) ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{COCH}}_3$

Acidic hydrogen present among the following compound is -

1. Ethyne

2. Ethene

3. Benzene

4. Ethane

What will be the Product in the following reaction?

1. 

2. 

3. 

4.  

Which of the following compounds is insoluble even in hot concentrated H₂​SO₄​?

1. Aniline 

2. Benzene

3. Ethylene

4. Hexane

Anti-Markovnikov’s addition of HBr is not observed in-

Baeyer's reagent is: 

1. Acidified permanganate solution

2. Alkaline permanganate solution

3. Neutral permanganate solution

4. Aqueous bromine solution

Which of the following compound has highest boiling point ?

(1) n-pentane

(2) 2-methyl butane

(3) 2, 2-dimethyl propane

(4) n-hexane