Free Radical Halogenation

Q.
Identify the reagent(s) 'A' and condition(s) for the reaction.

(JEE MAIN 2021)

1. $A=C{l}_2;UVlight$
2. $A=HCl,ZnC{l}_2$
3. $A=C{l}_2;dark,AnhydrousAlC{l}_3$
4. $A=HCl$ ;$AnhydrousAlC{l}_3$

Q.

Halogenation of alkanes is

[KCET 2002]

1. An isothermal process

2. A reductive process

3. An oxidative process

4. An indothermal process

Q. Chlorination of toluene in the presence of light and heat followed by treatment with aqueous sodium hydroxide gives

1. p-Cresol
2. 2, 4-Dihydroxytoluene
3. Benzoic acid
4. o-Cresol

Q.

is an example of which of the following types of reactions

[AFMC 1997; CPMT 1999]

1. Addition

2. Rearrangement

3. Elimination

4. Substitution

Q.

When chlorine passed through propene at 400 degree Celsius, the product is:

1. Vinyl chloride

2. PVC

3. Allyl chloride

4. 1, 2-dichloroethane

Q. Chlorination of toluene in presence of light and heat followed by treatment with aqueous NaOH gives

1. benzoic acid
2. p-cresol
3. mixture of o-cresol and p-cresol
4. o-cresol

Q.

On treatment with chlorine in presence of sunlight, benzene gives the product

1. Benzene hexachloride

2. 1, 2 - dichlorobenzene

3. p - dichlorobenzene

4. Benzyl chloride

Q.

How many chiral compounds are possible on monochlorination of 2-methylbutane?

1. 2

2. 4

3. 6

4. 8

Q.

From the options given below, choose the one that helps accomplish the given (above)conversion:

1. A: allyl bromination of propylbenzene using NBS, $h\nu$ B: E2 with a stong bulky base

2. A: allyl bromination of propylbenzene using NBS, $h\nu$ B: treatment with $O{H}^{-}$ at 0${}^{\circ }$C

3. A: allyl bromination of propylbenzene using NBS, $h\nu$ B: treatment with $N{H}_3$ at 0${}^{\circ }$C

4. None of the above

Q.

Methyl cyclopentane undergoes free radical mono-bromination in the presence of light; the major product is:

1. (bromomethyl)cyclopentane

2. 1-bromo-2-methylcyclopentane

3. 1-bromo-1-methylcyclopentane

4. 1-bromo-3-methylcyclopentane