What is the major product formed when toluene is refluxed with Br₂ in the presence of light?

1. p-Bromotoluene.

2. Benzyl bromide.

3. o-Bromotoluene.

4. Mixture of o- and p-bromotoluene.

If the relative reactivity of $1°$, $2°$ and $3°$ hydrogen's towards chlorination is 1:3.8:5. The percentages of $1°$ monochlorinated product obtained from 2-methylbutane is:

1. % of 1^o monochlorinated product = $41.7\%$

2. % of $1°$ monochlorinated product = 35.2 %

3. % of $1°$ monochlorinated product = 23.1 %

4. %  of $1°$ monochlorinated product = 33.2 %

The type of radicals that can be formed as intermediates during monochlorination of 2-methylpropane is-

1. Primary and tertiary radicals

2. Two types of primary radicals

3. Primary and secondary radicals

4. Two types of tertiary radical

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

Identify the product(s) formed on reductive ozonolysis of the following cumulene:

CH₃–CH=C=CH₂
1. Only CO₂
2. Only HCHO
3. Only CH₃CHO
4. A mixture of CH₃CHO, HCHO, and CO₂

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 the above

Ethene and ethyne can be distinguished by:

1. Br₂ water

2. KMnO₄ solution

3. Cuprous chloride solution

4. All of the above

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

Propyne and propene can be distinguished by:

1. Conc. H₂SO₄

2. Br₂ in CCl₄

3. Diluted H₂SO₄

4. AgNO₃ in ammonia

Which alkene among the following reacts the fastest with H₂​ under catalytic conditions?
 

1.		2.
3.		4.