• NCERT Solutions
    • NCERT Library
  • RD Sharma
    • RD Sharma Class 12 Solutions
    • RD Sharma Class 11 Solutions Free PDF Download
    • RD Sharma Class 10 Solutions
    • RD Sharma Class 9 Solutions
    • RD Sharma Class 8 Solutions
    • RD Sharma Class 7 Solutions
    • RD Sharma Class 6 Solutions
  • Class 12
    • Class 12 Science
      • NCERT Solutions for Class 12 Maths
      • NCERT Solutions for Class 12 Physics
      • NCERT Solutions for Class 12 Chemistry
      • NCERT Solutions for Class 12 Biology
      • NCERT Solutions for Class 12 Economics
      • NCERT Solutions for Class 12 Computer Science (Python)
      • NCERT Solutions for Class 12 Computer Science (C++)
      • NCERT Solutions for Class 12 English
      • NCERT Solutions for Class 12 Hindi
    • Class 12 Commerce
      • NCERT Solutions for Class 12 Maths
      • NCERT Solutions for Class 12 Business Studies
      • NCERT Solutions for Class 12 Accountancy
      • NCERT Solutions for Class 12 Micro Economics
      • NCERT Solutions for Class 12 Macro Economics
      • NCERT Solutions for Class 12 Entrepreneurship
    • Class 12 Humanities
      • NCERT Solutions for Class 12 History
      • NCERT Solutions for Class 12 Political Science
      • NCERT Solutions for Class 12 Economics
      • NCERT Solutions for Class 12 Sociology
      • NCERT Solutions for Class 12 Psychology
  • Class 11
    • Class 11 Science
      • NCERT Solutions for Class 11 Maths
      • NCERT Solutions for Class 11 Physics
      • NCERT Solutions for Class 11 Chemistry
      • NCERT Solutions for Class 11 Biology
      • NCERT Solutions for Class 11 Economics
      • NCERT Solutions for Class 11 Computer Science (Python)
      • NCERT Solutions for Class 11 English
      • NCERT Solutions for Class 11 Hindi
    • Class 11 Commerce
      • NCERT Solutions for Class 11 Maths
      • NCERT Solutions for Class 11 Business Studies
      • NCERT Solutions for Class 11 Accountancy
      • NCERT Solutions for Class 11 Economics
      • NCERT Solutions for Class 11 Entrepreneurship
    • Class 11 Humanities
      • NCERT Solutions for Class 11 Psychology
      • NCERT Solutions for Class 11 Political Science
      • NCERT Solutions for Class 11 Economics
      • NCERT Solutions for Class 11 Indian Economic Development
  • Class 10
    • NCERT Solutions for Class 10 Maths
    • NCERT Solutions for Class 10 Science
    • NCERT Solutions for Class 10 Social Science
    • NCERT Solutions for Class 10 English
    • NCERT Solutions For Class 10 Hindi Sanchayan
    • NCERT Solutions For Class 10 Hindi Sparsh
    • NCERT Solutions For Class 10 Hindi Kshitiz
    • NCERT Solutions For Class 10 Hindi Kritika
    • NCERT Solutions for Class 10 Sanskrit
    • NCERT Solutions for Class 10 Foundation of Information Technology
  • Class 9
    • NCERT Solutions for Class 9 Maths
    • NCERT Solutions for Class 9 Science
    • NCERT Solutions for Class 9 Social Science
    • NCERT Solutions for Class 9 English
    • NCERT Solutions for Class 9 Hindi
    • NCERT Solutions for Class 9 Sanskrit
    • NCERT Solutions for Class 9 Foundation of IT
  • CBSE Sample Papers
    • Previous Year Question Papers
    • CBSE Topper Answer Sheet
    • CBSE Sample Papers for Class 12
    • CBSE Sample Papers for Class 11
    • CBSE Sample Papers for Class 10
    • Solved CBSE Sample Papers for Class 9 with Solutions 2024-2025
    • CBSE Sample Papers Class 8
    • CBSE Sample Papers Class 7
    • CBSE Sample Papers Class 6
  • Textbook Solutions
    • Lakhmir Singh
    • Lakhmir Singh Class 10 Physics
    • Lakhmir Singh Class 10 Chemistry
    • Lakhmir Singh Class 10 Biology
    • Lakhmir Singh Class 9 Physics
    • Lakhmir Singh Class 9 Chemistry
    • PS Verma and VK Agarwal Biology Class 9 Solutions
    • Lakhmir Singh Science Class 8 Solutions

Learn CBSE

NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12

JEE Main Previous Year Papers Questions With Solutions Chemistry Haloalkenes and Haloarenes

September 24, 2018 by Sastry CBSE

JEE Main Previous Year Papers Questions With Solutions Chemistry Haloalkenes and Haloarenes

jee-main-previous-year-papers-questions-with-solutions-chemistry-haloalkenes-and-haloarenes-1
Ans.(2) The reaction is nucleophilic sustitution reaction.

2.On mixing a certain alkane with chlorine and irradiating it with ultraviolet light, it forms only one monochloroalkane. This alkane could  be  (2003)
1) pentane                    2) isopentane
3) neopentane             4) propane

Ans.
jee-main-previous-year-papers-questions-with-solutions-chemistry-haloalkenes-and-haloarenes-8

jee-main-previous-year-papers-questions-with-solutions-chemistry-haloalkenes-and-haloarenes-2
Ans.(1) Rate of reaction will be fastest when Z is Cl because it is a weakest base.

4.The compound  formed on heating chlorobenzene with chloral in the presence concentrated sulphuric   acid  is    (2004)
1) gammexene              2)  hexachloroethane
3) Freon                        4) DDT

Ans.(4) Dicholodiphenyl trichloroethene.

jee-main-previous-year-papers-questions-with-solutions-chemistry-haloalkenes-and-haloarenes-3
Ans.(4) Due to steric hindrance.

6.Reaction of one molecule of HBr with one molecule of 1,3-butadiene at 40°C gives predominantly         (2005)
1)3-bromobutene under kinetically controlled conditions
2)l-bromo-2-butene under thermodymically controlled conditions
3)3-bromobutene under thermodynamically controlled conditions
4)l-bromo-2-butene under kinetically controlled conditions

Ans.(2)CH3 – CH = CH2

7. Alkyl halides react with dialkyl copper reagents to give          (2005)
1)alkenes
2)alkyl copper halides
3)alkanes
4)alkenyl halides

Ans.(3)R2CuLi + R’X—>R-R +R-Cu + LiX

jee-main-previous-year-papers-questions-with-solutions-chemistry-haloalkenes-and-haloarenes-4
Ans.CH30– is more reactive and PhO- is least reactive.

9.Reaction of trans-2-phenyl-l bromo cyclopentane on reaction with alcoholic KOH produces.     (2006)
1)4-phenylcyclopentene
2)2-phenylcyclopentene
3)1-phenylcyclopentene
4)3-phenylcyclopentene

Ans.(4) Nucleophilic substitution of Cl– by CN–.

10. The structure of the major product formed in the following reaction is   (2006)
jee-main-previous-year-papers-questions-with-solutions-chemistry-haloalkenes-and-haloarenes-5
Ans.(4) According to E2 elimination mechanism.

11.Which of the following is the correct order of decreasing SN2 reactivity ?  (2007)
1)RCH2x > R3CX > R2CHX
2)RCH2X>R2CHX>R3CX
3)R3CX >R2CHX > RCH2X
4)R2CHX>R3CX>RCH2X

Ans.(2)More is the steric hindrance at the carbon bearing the halogen, lesser is the SN2 reactivity.

12.The organic chloro compound, which shows complete stereochemical inversion during a Sn2 reaction, is    (2008)
1)(C2H5)2CHCl            2) (CH3)3CCl
3) (CH3)2CHCl             4) CH3Cl

Ans.(4) For Sn2 reaction, the C atom is least hindered towards the attack of nucleophile in the case of CH3Cl.

13.Consider the following bromides :
jee-main-previous-year-papers-questions-with-solutions-chemistry-haloalkenes-and-haloarenes-6
Ans.(1) SN1 proceeds via carbocation intermediate, the most stable one forming the product faster. Hence reactivity order for A, B, C depends on stability of carbocation created
jee-main-previous-year-papers-questions-with-solutions-chemistry-haloalkenes-and-haloarenes-9

14.Phenol is heated with a solution of mixture of KBr and KBr03. The major product obtained in the reaction is  (2011)
1)4-Bromophenol
2)2, 4, 6-Tribromophenol
3)2-Bromophenol
4)3-Bromophenol

Ans.
jee-main-previous-year-papers-questions-with-solutions-chemistry-haloalkenes-and-haloarenes-10

15.Which branched chain isomer of the hydrocarbon with molecular mas 72u gives only one isomer of mono substituted alkyl halide ?  (2012)
1) Tertiarybutylchloride
2) Neopentane
3) Isohexane
4) Neohexane

Ans.(2) Neopentane, (CH3)4C, on monochlorination gives only one isomer.

16.In Sn2 reactions, the correct order of reactivity for the following compounds :
jee-main-previous-year-papers-questions-with-solutions-chemistry-haloalkenes-and-haloarenes-7
Ans.(3) Order of required reactivity :
CH3C1 > CH3CH2C1 > (CH3)2CHC1 > (CH3)3CC1

17.The synthesis of alkyl fluorides is best accom­plished by (2015)
1)Free radical fluorination
2)Sandmeyer’s reaction
3)Finkelstein reaction
4)Swarts reaction

Ans.(4) R -X + AgF —> R – F + AgX.

JEE Main Home Maths Physics Chemistry

Filed Under: Entrance Exam

LearnCBSE.in Student Education Loan
  • Student Nutrition - How Does This Effect Studies
  • Words by Length
  • NEET MCQ
  • Factoring Calculator
  • Rational Numbers
  • CGPA Calculator
  • TOP Universities in India
  • TOP Engineering Colleges in India
  • TOP Pharmacy Colleges in India
  • Coding for Kids
  • Math Riddles for Kids with Answers
  • General Knowledge for Kids
  • General Knowledge
  • Scholarships for Students
  • NSP - National Scholarip Portal
  • Class 12 Maths NCERT Solutions
  • Class 11 Maths NCERT Solutions
  • NCERT Solutions for Class 10 Maths
  • NCERT Solutions for Class 9 Maths
  • NCERT Solutions for Class 8 Maths
  • NCERT Solutions for Class 7 Maths
  • NCERT Solutions for Class 6 Maths
  • NCERT Solutions for Class 6 Science
  • NCERT Solutions for Class 7 Science
  • NCERT Solutions for Class 8 Science
  • NCERT Solutions for Class 9 Science
  • NCERT Solutions for Class 10 Science
  • NCERT Solutions for Class 11 Physics
  • NCERT Solutions for Class 11 Chemistry
  • NCERT Solutions for Class 12 Physics
  • NCERT Solutions for Class 12 Chemistry
  • NCERT Solutions for Class 10 Science Chapter 1
  • NCERT Solutions for Class 10 Science Chapter 2
  • Metals and Nonmetals Class 10
  • carbon and its compounds class 10
  • Periodic Classification of Elements Class 10
  • Life Process Class 10
  • NCERT Solutions for Class 10 Science Chapter 7
  • NCERT Solutions for Class 10 Science Chapter 8
  • NCERT Solutions for Class 10 Science Chapter 9
  • NCERT Solutions for Class 10 Science Chapter 10
  • NCERT Solutions for Class 10 Science Chapter 11
  • NCERT Solutions for Class 10 Science Chapter 12
  • NCERT Solutions for Class 10 Science Chapter 13
  • NCERT Solutions for Class 10 Science Chapter 14
  • NCERT Solutions for Class 10 Science Chapter 15
  • NCERT Solutions for Class 10 Science Chapter 16

Free Resources

RD Sharma Class 12 Solutions RD Sharma Class 11
RD Sharma Class 10 RD Sharma Class 9
RD Sharma Class 8 RD Sharma Class 7
CBSE Previous Year Question Papers Class 12 CBSE Previous Year Question Papers Class 10
NCERT Books Maths Formulas
CBSE Sample Papers Vedic Maths
NCERT Library

NCERT Solutions

NCERT Solutions for Class 10
NCERT Solutions for Class 9
NCERT Solutions for Class 8
NCERT Solutions for Class 7
NCERT Solutions for Class 6
NCERT Solutions for Class 5
NCERT Solutions for Class 4
NCERT Solutions for Class 3
NCERT Solutions for Class 2
NCERT Solutions for Class 1

Quick Resources

English Grammar Hindi Grammar
Textbook Solutions Maths NCERT Solutions
Science NCERT Solutions Social Science NCERT Solutions
English Solutions Hindi NCERT Solutions
NCERT Exemplar Problems Engineering Entrance Exams
Like us on Facebook Follow us on Twitter
Watch Youtube Videos NCERT Solutions App