Back to Haloalkanes & Haloarenes

Set 4 of 10 · Questions 91-120 of 272

In the print window choose “Save as PDF”. The file prints without a web address or date line.

Mere Teacher

Mere Teacher · Previous Year Questions

JEE Main Chemistry · Haloalkanes & Haloarenes · Set 4 (Q91-120)

QR code to mereteacher.com

Scan or visit mereteacher.com for free PYQ practice, timed CBT tests, step-by-step solutions and BroBot AI. Answers and solutions are free with a sign-up.

  1. 91.
    Increasing order of reactivity of the following compounds for substitution is:
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  2. 92.
    Consider the following molecule(X).
    The structure of is
    The major product formed when the given molecule is treated with is:
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  3. 93.
    Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R :
    Assertion A : Aryl halides cannot be prepared by replacement of hydroxyl group of phenol by halogen atom.
    Reason R : Phenols react with halogen acids violently. In the light of the above statements, choose the most appropriate from the options given below:
    1. (1)Both and are true but is NOT the correct explanation of
    2. (2) is false but is true
    3. (3) is true but is false
    4. (4)Both and are true and is the correct explanation of
  4. 94.
    The major product formed in the Friedel-Craft acylation of chlorobenzene is
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  5. 95.
    The increasing order of the reactivity of the following compounds towards electrophilic aromatic substitution reactions is :
    1. (1)II < I < III
    2. (2)III < II < I
    3. (3)III < I < II
    4. (4)I < III < II
  6. 96.
    obtained by Cl chlorination of ‐butane will be
    1. (1)meso form
    2. (2)racemic mixture
    3. (3)‐form
    4. (4)‐form
  7. 97.
    A compound contains and only and has molecular mass 72. It's photochlorination gives a mixture containing only one monochloro and two dichloro hydrocarbons. The IUPAC name is
    1. (1)2, 2-dimethylpropane
    2. (2)-pentane
    3. (3)2-methyl butane
    4. (4)cyclopentane
  8. 98.
    In the following reaction the reason why meta-nitro product also formed is:
    1. (1)
    2. (2) substitution always takes place at meta-position
    3. (3)
    4. (4)group is highly meta-directive
  9. 99.
    Replacement of of chlorobenzene to give phenol requires drastic conditions. But chlorine of 2,4‐dinitrochlorobenzene is readily replaced because
    1. (1) donates at meta position
    2. (2) withdraws from ortholpara positions
    3. (3) make ring electron rich at ortho and para
    4. (4) withdraws from meta position.
  10. 100.
    Which of the following potential energy diagrams represents the reaction?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  11. 101.
    How many optically active stereomers are possible for butane-2, 3-diol?
    1. (1)3
    2. (2)4
    3. (3)1
    4. (4)2
  12. 102.
    The major product of the following reaction is :
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  13. 103.
    Given below are two statements:
    Statement I: will undergo reaction though it is a primary halide.
    Statement II: will not undergo reaction very easily though it is a primary halide.
    choose the most appropriate answer from the options given below:
    1. (1)Both Statement I and Statement II are incorrect
    2. (2)Both Statement I and Statement II are correct
    3. (3)Statement I is incorrect but Statement II is correct
    4. (4)Statement I is correct but Statement II is incorrect
  14. 104.
    An 'Assertion' and a 'Reason' are given below. Choose the correct answer from the following options:
    Assertion (A) : Vinyl halides do not undergo nucleophilic substitution easily.
    Reason (R) : Even though the intermediate carbocation is stabilized by loosely held π -electrons, the cleavage is difficult because of strong bonding.
    1. (1)Both and are wrong statements
    2. (2)Both and are correct statements and is the correct explanation of .
    3. (3)Both and are correct statements but is not the correct explanation of .
    4. (4) is a correct statement but is a wrong statement.
  15. 105.
    The correct order of reactivity of the following benzyl halides towards reaction with KCN is:
    (A) (B) (C) (D)
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  16. 106.
    Arrange the following in correct order towards reaction.
    1 – Chloropropane 2-Chloropropane
    I II
    1 -Iodopropane 2 - Iodopropane
    III IV
    1. (1)III I IV II
    2. (2)III IV I II
    3. (3)I II III IV
    4. (4)I III II IV
  17. 107.
    The compound that will undergo reaction with the fastest rate is [NEET 2024]
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  18. 108.
    Which one of the following is likely to give a precipitate with solution?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  19. 109.
    The decreasing order of reactivity towards dehydrohalogenation reaction of the following compounds is:
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  20. 110.
    Which hydrogen in compound is easily replaceable during bromination reaction in presence of light?
    1. (1) hydrogen
    2. (2) – hydrogen
    3. (3) - hydrogen
    4. (4) – hydrogen
  21. 111.
    For the reaction
    The correct statement is
    1. (1) can act as competing nucleophile.
    2. (2)The reaction can occur in acetic acid also.
    3. (3)The transition state formed in the above reaction is less polar than the localised anion.
    4. (4)The solvent used in the reaction solvates the ions formed in rate determining step
  22. 112.
    Grignard reagent is prepared by there action between
    1. (1)magnesium and alkane
    2. (2)magnesium and aromatic hydrocarbon
    3. (3)zinc and alkyl halide
    4. (4)magnesium and alkyl halide.
  23. 113.
    Which of the following is an optically active compound?
    1. (1)1‐Butanol
    2. (2)1‐Propanol
    3. (3)2‐Chlorobutane
    4. (4)4‐Hydroxyheptane
  24. 114.
    The order of reactivity of the following compounds towards dilute aqueous in reaction is
    (i) (ii)
    (iii) (iv)
    1. (1)I IV III II
    2. (2)IV II III I
    3. (3)III II I IV
    4. (4)I III II IV
  25. 115.
    What are and in the following reaction sequence?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  26. 116.
    In the above reaction product ' ' is
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  27. 117.
    Increasing rate of reaction in the following compounds is:
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  28. 118.
    When chlorine is passed through propene at , which of the following is formed?
    1. (1)PVC
    2. (2)Allyl chloride
    3. (3)Propyl chloride
    4. (4)1, 2‐Dichloroethane
  29. 119.
    Consider the reaction sequence given below:

    Which of the following statements is true?
    1. (1)Changing the concentration of base will have no effect on reaction
    2. (2)Changing the concentration of base will have no effect on reaction
    3. (3)Changing the base from to will have no effect on reaction (2)
    4. (4)Doubling the concentration of base will double the rate of both the reactions
  30. 120.

    The total number of hydrogen atoms in product and product is_____