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. ${\mathrm{La}}_4{\mathrm{C}}_3$

Hydrogenation of the above compound in the presence of poisoned palladium catalyst gives

(1) optically active compound

(2) an optically inactive compound

(3) a racemic mixture

(4) a diastereomeric mixture

The reaction of HBr with 

 in the presence of peroxide will give:

1.
2.
3.
4.

The product formed on reaction of HBr with propene is-

1. 1-bromopropane

2. 2-bromopropane

3. 3-bromopropane

4. no reaction occurs

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

1.		2.
3.		4.

Propyne and propene can be distinguished by ,

(1) conc. H₂SO₄

(2) Br₂ in CCl₄

(3) diluted H₂SO₄

(4) AgNO₃ in ammonia

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

Ethene and ethyne can be distinguished by:

1. Br₂ water

2. KMnO₄ solution

3. Cuprous chloride solution

4. All of the above

Which among of the following alkyne will give an aldehyde on hydroboration oxidation reaction?

1. $\mathrm{CH}\equiv \mathrm{CH}$

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

3. ${\mathrm{CH}}_3-\mathrm{C}\equiv \mathrm{C}-\mathrm{H}$

4. All of these

Reductive ozonolysis of the alkene, ${\mathrm{CH}}_3-\mathrm{CH}=\mathrm{C}={\mathrm{CH}}_2$ will give:

1. Only ${\mathrm{CO}}_2$

2. Only ${\mathrm{CH}}_2\mathrm{O}$

3. Only ${\mathrm{CH}}_3-\mathrm{CHO}$

4. Mixture of ${\mathrm{CH}}_3\mathrm{CHO},\mathrm{HCHO} \mathrm{and} {\mathrm{CO}}_2$