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JEE Main Chemistry · Haloalkanes & Haloarenes · Set 2 (Q31-60)

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  1. 31.
    Reaction of methyl bromide with aqueous sodium hydroxide involves
    1. (1)
    2. (2) mechanism
    3. (3)
    4. (4)
  2. 32.
    Given below are two statements:
    Statement - I: High concentration of strong nucleophilic reagent with secondary alkyl halides which do not have bulky substituents will follow mechanism.
    Statement - II: A secondary alkyl halide when treated with a large excess of ethanol follows mechanism. In the the light of the above statements, choose the most appropriate from the questions given below:
    1. (1)Statement I is true but Statement II is false.
    2. (2)Statement I is false but Statement II is true.
    3. (3)Both statement I and Statement II are false.
    4. (4)Both statement I and Statement II are true.
  3. 33.
    Which of the following reaction is NOT correctly represented?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  4. 34.
    Which among the following will have highest density?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  5. 35.
    Which of the following is an organometallic compound?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  6. 36.
    Methyl bromide is converted into ethane by heating it in ether medium with
    1. (1)Al
    2. (2)Zn
    3. (3)Na
    4. (4)Cu.
  7. 37.
    Which of the following halide shows highest reactivity towards reaction?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  8. 38.
    If ' ' represents total number of asymmetric carbon atoms in a compound, the possible number of optical isomers of the compound is
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  9. 39.
    Which of the following pairs are correctly matched?
    Reactants
    Products
    I.

    II.

    III.

    IV.
    1. (1)I alone
    2. (2)I and II
    3. (3)II and III
    4. (4)II and IV
  10. 40.
    Identify the halogen exchange reaction from the following
    1. (1)Sandmeyer reaction
    2. (2)Swarts reaction
    3. (3)Stephens reaction
    4. (4)Wurtz reaction
  11. 41.
    Least reactive alkyl chloride in a reaction is
    1. (1)1-Chloro butane
    2. (2)1-Chloro 2-Methyl propane
    3. (3)2-Chloro 2-Methyl propane
    4. (4)2-Chloro butane
  12. 42.
    Which reaction is useful in exchange of halogen in alkyl chloride by iodide?
    1. (1)Wurtz reaction
    2. (2)Finkelstein reaction
    3. (3)Reimer-Tiemann reaction
    4. (4)Williamson synthesis
  13. 43.
    Choose the correct decreasing order of reactivity of alkyl halides towards reaction.
    1. (1)Primary halide Secondary halide Tertiary halide
    2. (2)Secondary halide Tertiary halide Primary halide
    3. (3)Tertiary halide Secondary halide Primary halide
    4. (4)Tertiary halide Primary halide Secondary halide
  14. 44.
    Which of the following biphenyls is optically active?.
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  15. 45.
    The reaction of with HBr produces [AIPMT 2015]
    1. (1)
      |
      Br
    2. (2)
      |
      Br
    3. (3)
    4. (4)
  16. 46.
    The correct sequence of bond enthalpy of bond [NEET 2024]
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  17. 47.
    1-chloro butane on treatment with alcoholic potash forms………..
    1. (1)2-butanol
    2. (2)1-butene
    3. (3)1-butanol
    4. (4)2-butene
  18. 48.
    The products and obtained in the following reactions, respectively are [NEET 2024]
    1. (1) and
    2. (2) and
    3. (3) and
    4. (4) and
  19. 49.
    Which of the following undergoes nucleophilic substitution exclusively by mechanism?
    1. (1)Ethyl chloride
    2. (2)Isopropyl chloride
    3. (3)Chlorobenzene
    4. (4)Benzyl chloride
  20. 50.
    In an reaction on chiral centers, there is [NEET 2025]
    1. (1)inversion more than retention leading to partial racemization
    2. (2) retention
    3. (3) inversion
    4. (4) racemisation
  21. 51.
    The hydrolysis reaction that takes place at the slowest rate, among the following is
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  22. 52.
    Which of the following reaction represents swarts reaction?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  23. 53.
    Polysubstitution is a major drawback in :
    1. (1)Friedel Craft’s alkylation
    2. (2)Reamer Tiemann reaction
    3. (3)Acetylation of aniline
    4. (4)Friedel Craft’s acylation
  24. 54.
    Which chloro derivative of benzene among the following would undergo hydrolysis most
    readily with aqueous sodium hydroxide to turnish the corresponding hydroxy derivative? [NEET 2017]
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  25. 55.
    Assertion (A) : I- Bromopentane reacts with AgCN to give pentylisocyanideReason ( R ) : AgCN is mainly ionic in nature
    1. (1) is true, is true and is correct explanation of
    2. (2) is true, is true but is not correct explanation of
    3. (3) is true, is false
    4. (4) is false, is true
  26. 56.
    An organic compound on heating with produces but no water. The organic compound may be
    1. (1)chloroform
    2. (2)methane
    3. (3)ethyl iodide
    4. (4)carbon tetrachloride.
  27. 57.
    Which one of the following has highest boiling point?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  28. 58.
    The compound with molecular formula , which gives only one monobromo derivative and takes up four moles of hydrogen per mole for complete hydrogenation has electrons.
  29. 59.
    Consider all the structural isomers with molecular formula are separately treated with to give respective substitution products, without any rearrangement. The number of products which can exhibit optical isomerism from these is .
  30. 60.
    Grignard reagent reacts with water and forms a gas (Q). One gram of Q occupies at STP. (P) on reaction with dry ice in dry ether followed by forms a compound (Z). 0.1 mole of (Z) will weigh g. (Nearest integer)