Bromination

Q.

Which one of the following compounds most readily undergoes substitution by S_N2 mechanism?

1. 

2. 

3. 

4. 

Q.
The number of possible monobromo products is: (excluding stereoisomers)

1. 4
2. 5
3. 8
4. 10

Q.

When But-2-yne reacts with HBr , it gives:

1. 2, 3- dibromobutane

2. 1, 2-dibromobutane

3. 1, 1-dibromobutane

4. 2, 2-dibromobutane

Q. For the given reaction :


Number of possible monobromo products (excluding stereoisomers) are :

Q. 1) what is moles and how to find mole?? 2) what is gay luccas law?

Q. Which is the major monobromination product when ethylcyclohexane is subjected to free radical bromination?

1. 
2. 
3. 
4. 

Q. Among the following free radical bromination reaction(s), the reactions in which $2^{\circ }$ halide is a major product is/are :

1. 
2. 
3. 
4. All of the above.

Q. In which of the following pairs, the rate of bromination of first member is more than the second member?

1. Isobutane, n-butane
2. n-butane, isobutane
3. Methane, ethane
4. None of these

Q. When butene-1 is mixed with excess of bromine, the expected reaction product is

1. 1, 2-dibromobutane
2. 1, 1-dibromobutane
3. 2, 2-dibromobutane
4. Perbromobutane

Q. When butene-1 is mixed with excess of bromine, the expected reaction product is

1. 1, 2-dibromobutane
2. 1, 1-dibromobutane
3. 2, 2-dibromobutane
4. Perbromobutane

Q.

What is the chief product obtained when n-butane is treated with bromine in the presence of light at ${130}^{\circ }C$

1. 

2. 

3. 

4.