Free Radical

Q.

A radical is capable of independent existence.

1. True
2. False

Q.

The reaction intermediate produced by homolytic cleavage of a bond is called:

1. Carbocations

2. Carbanions

3. Free radicals

4. Carbenes

Q.

Which of the following orders regarding relative stability of free radicals is correct?

1. 3° < 2° < 1°

2. 3° > 2° > 1°

3. 1° < 2° > 3°

4. 3° > 2° < 1°

Q.

Which of the following is TRUE for carbon free radical?

1. These are odd electron species.

2. There are seven electrons in the valence shell.

3. It is paramagnetic in nature.

4. A free radical generally reacts with free radicals

Q. In pyrrole

The electron density is maximum on

1. 2 and 3
2. 2 and 4
3. 2 and 5
4. 3 and 4

Q. The homolytic breaking of the $C^a-C^b$ bond is easiest in:

1. 
2. 
3. 
4. 

Q. In a carbon free radical, total number of electrons that are present around C atom are?

1. 5
2. 6
3. 7
4. 8

Q.

The above reaction proceeds through

1. Nucleophilic substitution

2. Electrophilic substitution

3. Free radical substitution

4. More than one of the above processes

Q. The homolytic breaking of the $C^a-C^b$ bond is easiest in:

1. 
2. 
3. 
4.