The number of monochloro structural isomers formed on free radical monochlorination of (CH₃)₂CHCH₂CH₃ is-

1. 5
2. 3
3. 4
4. 6

Consider the following reaction

 

The product A is-

1.

2.

3.
4. None of the above

Consider the following reaction.



The product A and B are respectively-

1. A= R-CH₂-CN; B= R-CH₂-NC
2. A= R-CH₂-NC; B= R-CH₂-CN
3. A= R-NCH-CH₃; B= R-CH₂-CN
4. A= R-CH₂-NC; B= R-CHN-CH₃

In the following pairs of halogen compounds, the pair that would undergo S_N2 reaction faster-

1. ;
2. ;
3. ;
4. ;

Correct statement among the following is-

a. For S_N2 reactivity order is CH₃CH₂CH₂CH₂Br > (CH₃)₂CHCH₂Br > CH₃CH₂CH(Br)CH₃ > (CH₃)₃CBr
b. For S_N1 reactivity order is (CH₃)₃CBr > CH₃CH₂CH(Br)CH₃ >CH₃CH₂CH₂CH₂Br >(CH₃)₂CHCH₂Br
c. For S_N1 reactivity order is C₆H₅CH₂Br < C₆H₅CH(CH₃)Br < C₆H₅CH(C₆H₅)Br< C₆H₅C(CH₃)(C₆H₅)Br
d. For S_N2 reactivity order is C₆H₅CH₂Br > C₆H₅CH(CH₃)Br > C₆H₅CH(C₆H₅)Br > C₆H₅C(CH₃)(C₆H₅)Br

The correct statement(s) is/are-

1. a, b
2. b, c
3. a, c, d
4. b, d