The compound among the following that yield propyne on hydrolysis is:

1. ${\mathrm{Al}}_4{\mathrm{C}}_3$

2. ${\mathrm{Mg}}_2{\mathrm{C}}_3$

3. ${\mathrm{B}}_4\mathrm{C}$

4. ${\mathrm{La}}_4{\mathrm{C}}_3$

The reaction of HBr with 

 in the presence of peroxide will give:

1.
2.
3.
4.

An alkene among the following that reacts fastest with H₂ under catalytic conditions is -

1.		2.
3.		4.

The product(s) obtained via oxymercuration (HgSO₄ + H₂SO₄ ) of but-1-yne is -

1. ${\mathrm{CH}}_3{\mathrm{CH}}_2-\stackrel{\stackrel{\mathrm{O}}{\left|\right|}}{\mathrm{C}}-{\mathrm{CH}}_3$

2. CH₃CH₂ CH₂-CHO

3. CH₃CH₂CHO + HCHO

4. CH₃ CH₂COOH + HCOOH

The most acidic compound among the following is- 

1. ${\mathrm{CH}}_3-{\mathrm{CH}}_3$

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

3. ${\mathrm{CH}}_2={\mathrm{CH}}_2$

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

Ethene and ethyne can be distinguished by:

1. Br₂ water

2. KMnO₄ solution

3. Cuprous chloride solution

4. All of the above

The reaction intermediate involved in the addition of \(\mathrm{HBr}\) to propene in the absence of peroxides is:

The reaction of propene with HOCl proceeds via the addition of-

In the presence of peroxide, hydrogen chloride and hydrogen fluoride do not undergo anti-Markovnikov's

addition reaction with alkenes because-

1. Both are highly ionic

2. One is oxidizing and the other is reducing

3. One of the steps is endothermic in both the cases

4. All the steps are exothermic in both cases

Which of the following Hydrocarbon has the highest octane number?

1. Methane

2. Ethane

3. Iso-octane

4. Triptane