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JEE Main Chemistry · Haloalkanes & Haloarenes · Set 5 (Q121-150)

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  1. 121.
    Alkaline hydrolysis of which among the following compounds leads to the formation of a racemate?
    1. (1)1-Bromo-1-phenylethane
    2. (2)1-Chloro-3-methylbutane
    3. (3)Bromoethane
    4. (4)1-Chloropropane
  2. 122.
    Match List-I with List-II.
    1 -Bromopropane is reacted with reagents in List-I to give product in List-II

    Choose the correct answer from the options given below
    1. (1)A-III, B-I, C-IV, D-II
    2. (2)A-I, B-II, C-III, D-IV
    3. (3)A-I, B-III, C-IV, D-II
    4. (4)A-IV, B-III, C-II, D-I
  3. 123.
    Ammonolysis of Alkyl halides followed by the treatment with solution can be used to prepare primary, secondary and tertiary amines. The purpose of in the reaction is:
    1. (1)to remove basic impurities
    2. (2)to activate used in the reaction
    3. (3)to remove acidic impurities
    4. (4)to increase the reactivity of alkyl halide
  4. 124.
    The major product obtained from - elimination of -bromo--fluoropentane is
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  5. 125.
    Which of the following compounds is not chiral
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  6. 126.
    2-Methyl propyl bromide reacts with and gives 'A' whereas on reaction with OH it gives 'B'. The mechanism followed in these reactions and the products 'A' and 'B' respectively are:
    1. (1)2, A =iso-butyl ethyl ether;1, B =tert-butyl ethyl ether
    2. (2)1, A =tert-butyl ethyl ether; 1, B = 2-butyl ethyl ether
    3. (3)2, A = 2-butyl ethyl ether; 2, B =iso-butyl ethyl ether
    4. (4)1, A =tert-butyl ethyl ether; 2, B =iso-butyl ethyl ether
  7. 127.
    What is the product of the reaction given below?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  8. 128.
    The mechanism of reaction is given asA student writes general characteristics based on the given mechanism as(A) The reaction is favored by weak nucleophiles.(B) would be easily formed if the substituents are bulky(C) The reaction is accompanied by racemization. The reaction is favored by non-polar solvents.Which observations are correct?
    1. (1)(B) and
    2. (2)and
    3. (3) and
    4. (4) and
  9. 129.
    How many distinct alkenes obtained from the 3-Bromo3 -methylhexane upon treatment with alc. ?
    1. (1)2
    2. (2)3
    3. (3)4
    4. (4)5
  10. 130.
    The correct order of reactivity of following haloarenes towards nucleophilic substitution with aqueous NaOH is:

    Choose the correct answer from the options given below:
    1. (1)A >B >D> C
    2. (2)C > A > D > B
    3. (3)D > C > B > A
    4. (4)D > B > A > C
  11. 131.
    Consider the reaction

    This reaction will be fastest in [NEET 2016]
    1. (1)ethanol
    2. (2)methanol
    3. (3)-dimethylformamide (DMF)
    4. (4)water
  12. 132.
    The correct order of reactivity in electrophilic substitution reaction of the following compounds is :
    1. (1)B C A D
    2. (2)D C B A
    3. (3)A B C D
    4. (4)
  13. 133.
    In a substitution reaction of the typewhich one of the following has the highest relative rate?.
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  14. 134.
    Meso compounds do not show optical activity because
    1. (1)they do not contain chiral carbon atoms
    2. (2)they have non-superimposable mirror images
    3. (3)they contain plane of symmetry
    4. (4)they do not contain plane of symmetry.
  15. 135.
    Considering the above reactions, the compound 'A' and compound 'B' respectively are :
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  16. 136.
    Identify the statement which is not correct?
    1. (1)Dehydrobromination of 2-bromopentane gives pent1-ene as the major product.
    2. (2)Freon 12 is manufactured by Swarts reaction.
    3. (3) is stored in closed, dark coloured bottles.
    4. (4)Chronic exposure to causes liver damage.
  17. 137.
    The correct order of the following compounds showing increasing tendency towards nucleophilic substitution reaction is :
    1. (1)(iv) < (i) < (iii) < (ii)
    2. (2)(iv) < (i) < (ii) < (iii)
    3. (3)(i) < (ii) < (iii) < (iv)
    4. (4)(iv) < (iii) < (ii) < (i)
  18. 138.
    An alkyl halide undergoes nucleophilic substitution by reaction. The product of on reaction with dry ether followed by is
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  19. 139.
    The reaction in which two molecules of chlorobenzene reacts with metallic sodium in presence of dry ether forming diphenyl is an example of
    1. (1)Wurtz-Fittig reaction
    2. (2)Wurtz reaction
    3. (3)Rosenmund reaction
    4. (4)Balz-Schiemann reaction.
  20. 140.
    Which one of the following will be most reactive for reaction?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  21. 141.
    The maximum number of possible optical isomers in 1-bromo-2-methyl cyclobutane is
    1. (1)4
    2. (2)2
    3. (3)8
    4. (4)16
  22. 142.
    Which of the following compounds will form the precipitate with aq. solution most readily?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  23. 143.
    Identify the product of the following reaction.
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  24. 144.
    The rate reaction will be faster for which of the following bromides?
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  25. 145.
    Match the LIST-I with LIST-II

    Choose the correct answer from the options given below:
    1. (1)A-III, B-IV, C-I, D-II
    2. (2)A-I, B-II, C-IV, D-III
    3. (3)A-IV, B-I, C-III, D-II
    4. (4)A-III, B-IV, C-II, D-I
  26. 146.
    While assigning configuration the correct order of priority of groups attached to chiral carbon atom is
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  27. 147.
    The order of reactivity of the compounds , , and in reaction is
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  28. 148.
    As compared with chlorocyclohexane, which of the following statements correctly apply to chlorobenzene?(A) The magnitude of negative charge is more on chlorine atom.(B) The C-Cl bond has partial double bond character.(C) C-Cl bond is less polar.(D) C-Cl bond is longer due to repulsion between delocalised electrons of the aromatic ring and lone pairs of electrons of chlorine.(E) The C-Cl bond is formed using hybridised orbital of carbon.
    Choose the correct answer from the options given below:
    1. (1)(B), (C) and (E) Only
    2. (2)(A), (C) and (E) Only
    3. (3)(A), (D) and (E) Only
    4. (4)(B), (C) and (D) Only
  29. 149.
    The Swarts reaction yields
    1. (1)iodohydrocarbons
    2. (2)fluorohydrocarbons
    3. (3)bromohydrocarbons
    4. (4)chlorohydrocarbons
  30. 150.
    The major product of the following reaction is:
    1. (1)
    2. (2)
    3. (3)
    4. (4)