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

Assertion(A): chlorine is an electron-withdrawing group, yet it is ortho-, para- directing in electrophilic aromatic substitution reactions.

Reason(R):  Halogen atom is a ring deactivator.

1. Both assertion and reason are true, and reason is the correct explanation of the assertion.

2. Both assertion and reason are true, but reason is not the correct explanation of the assertion.

3. Assertion is true but reason is false.

4. Assertion is false but reason is true.
 

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

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

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

Consider the following reaction

 

The product A is-

1.

2.

3.
4. None of the above

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

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

Match the items in column I with the column II.
 

Column I: Structures	Column II: IUPAC name
a.	i. 4-Bromo- 3-methylpent-2-ene
b.	ii. 3-Bromo-2-methylpropene
c.	iii.  1-Bromo-2-methylbut-2-ene
d.	iv. 4-Bromopent-2-ene

1. a=iii; b=iv; c=i; d=ii
2. a=ii; b=iv; c=i; d=iii
3. a=iv; b=i; c=ii; d=iii
4. a=iv; b=ii, c=iv; d=iii

The correct statement among the following about C₅H₁₁Br is-

1. It has total 8 isomers, 4 are primary alkyl bromide isomers and 2 are tertiary alkyl bromide isomers.
2. It has total 7 isomers, 4 are primary alkyl bromide isomers and 2 are tertiary alkyl bromide isomers.
3. It has total 8 isomers, 4 are primary alkyl bromide isomers and 3 are secondary alkyl bromide isomers.
4. It has total 7 isomers, 3 are secondary alkyl bromide isomers and 1 is a tertiary alkyl bromide isomer.