Examsnet
Unconfined exams practice
Home
Exams
Banking Entrance Exams
CUET Exam Papers
Defence Exams
Engineering Exams
Finance Entrance Exams
GATE Exam Practice
Insurance Exams
International Exams
JEE Exams
LAW Entrance Exams
MBA Entrance Exams
MCA Entrance Exams
Medical Entrance Exams
Other Entrance Exams
Police Exams
Public Service Commission (PSC)
RRB Entrance Exams
SSC Exams
State Govt Exams
Subjectwise Practice
Teacher Exams
SET Exams(State Eligibility Test)
UPSC Entrance Exams
Aptitude
Algebra and Higher Mathematics
Arithmetic
Commercial Mathematics
Data Based Mathematics
Geometry and Mensuration
Number System and Numeracy
Problem Solving
Board Exams
Andhra
Bihar
CBSE
Gujarat
Haryana
ICSE
Jammu and Kashmir
Karnataka
Kerala
Madhya Pradesh
Maharashtra
Odisha
Tamil Nadu
Telangana
Uttar Pradesh
English
Competitive English
Certifications
Technical
Cloud Tech Certifications
Security Tech Certifications
Management
IT Infrastructure
More
About
Careers
Contact Us
Our Apps
Privacy
Test Index
JEE Main Chemistry Class 12 Haloalkanes and Haloarenes Part 1 Questions
Show Para
Hide Para
Share question:
© examsnet.com
Question : 2
Total: 100
For the reaction:
RCH
2
Br
+
I
−
Acetone
─
─
─
─
─
─
▶
RCH
2
major
I
+
Br
−
The correct statement is :
[6-Apr-2023 shift 1]
The transition state formed in the above reaction is less polar than the localised anion.
The reaction can occur in acetic acid also.
The solvent used in the reaction solvates the ions formed in rate determining step.
Br
−
can act as competing nucleophile.
Validate
Solution:
This is finkelstein reaction
Clearly, the transition state is less polar than free anions.
Br
−
and
I
−
Acetic acid is protic which does not support
S
N
2
Acetone does not solvate anion
Br
−
gets precipitated and hence can not compete with
I
−
So only (1)is correct
© examsnet.com
Go to Question:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
Prev Question
Next Question