JEE Main & Advanced Chemistry Haloalkanes and Haloarenes / हैलोएल्केन तथा हैलोएरीन्स Question Bank

done Critical Thinking Haloalkanes Total Questions - 23

• question_answer1)
  Among the following, the molecule with the highest dipole moment is           [IIT-JEE (Screening) 2003]
  A)
  \[C{{H}_{3}}Cl\] done clear
  B)
  \[C{{H}_{2}}C{{l}_{2}}\] done clear
  C)
  \[CHC{{l}_{3}}\] done clear
  D)
  \[CC{{l}_{4}}\] done clear
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• question_answer2)
  When CHCl3 is boiled with NaOH, It gives    [Orissa JEE 2003]
  A)
  Formic acid done clear
  B)
  Trihydroxy methane done clear
  C)
  Acetylene done clear
  D)
  Sodium formate done clear
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• question_answer3)
  The hybridization state of carbon atoms in the product formed by the reaction of ethyl chloride with aqueous potassium hydroxide is [EAMCET 1997]
  A)
  sp done clear
  B)
  \[s{{p}^{2}}\] done clear
  C)
  \[s{{p}^{3}}\] done clear
  D)
  \[s{{p}^{3}}d\] done clear
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• question_answer4)
  Which of the following compounds does not undergo nucleophilic substitution reactions [KCET 1998]
  A)
  Vinyl chloride done clear
  B)
  Ethyl bromide done clear
  C)
  Benzyl chloride done clear
  D)
  Isopropyl chloride done clear
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• question_answer5)
  Replacement of Cl of chlorobenzene to give phenol requires drastic conditions but chlorine of 2, 4-dinitrochlorobenzene is readily replaced because [CBSE PMT 1997]
  A)
  \[N{{O}_{2}}\] make ring electron rich at ortho and para done clear
  B)
  \[N{{O}_{2}}\] withdraws \[{{e}^{-}}\] from meta position done clear
  C)
  denotes \[{{e}^{-}}\] at meta position done clear
  D)
  \[N{{O}_{2}}\] withdraws \[{{e}^{-}}\] from ortho/para positions done clear
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• question_answer6)
  Among the following one with the highest percentage of chlorine is [MNR 1989; BHU 1998; MH CET 1999]
  A)
  Chloral done clear
  B)
  Pyrene done clear
  C)
  PVC done clear
  D)
  Gammexene done clear
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• question_answer7)
  In which alkyl halide, \[S{{N}^{2}}\] mechanism is favoured maximum [RPMT 1997]
  A)
  \[C{{H}_{3}}Cl\] done clear
  B)
  \[C{{H}_{3}}C{{H}_{2}}Cl\] done clear
  C)
  \[{{(C{{H}_{3}})}_{2}}CHCl\] done clear
  D)
  \[{{(C{{H}_{3}})}_{3}}C-Cl\] done clear
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• question_answer8)
  Which conformation of \[{{C}_{6}}{{H}_{6}}C{{l}_{6}}\] is most powerful insecticide
  A)
  aaeeee done clear
  B)
  aaaeee done clear
  C)
  aaaaee done clear
  D)
  aaaaaa done clear
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• question_answer9)
  The odd decomposition of carbon chlorine bond form [UPSEAT 1999]
  A)
  Two free ions done clear
  B)
  Two-carbanium ion done clear
  C)
  Two carbanion done clear
  D)
  A cation and an anion done clear
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• question_answer10)
  A new carbon-carbon bond formation is possible in [IIT-JEE 1998]
  A)
  Cannizzaro reaction done clear
  B)
  Friedel-Craft's alkylation done clear
  C)
  Clemmensen reduction done clear
  D)
  Reimer-Tiemann reaction done clear
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• question_answer11)
  An isomer of \[{{C}_{3}}{{H}_{6}}C{{l}_{2}}\]on boiling with aqueous KOH gives acetone. Hence, the isomer is [UPSEAT 2000]
  A)
  2, 2-dichloropropane done clear
  B)
  1, 2-dichloropropane done clear
  C)
  1, 1-dichloropropane done clear
  D)
  1, 3-dichloropropane done clear
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• question_answer12)
  Which of the following is the example of \[S{{N}^{2}}\] reaction [CPMT 1999]
  A)
  \[C{{H}_{3}}Br+O{{H}^{-}}-C{{H}_{3}}OH+B{{r}^{-}}\] done clear
  B)
  \[\underset{\underset{\,Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,OH\,\,\,}{\mathop{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,}}\,}{\mathop{C{{H}_{3}}CHC{{H}_{3}}+O{{H}^{-}}\xrightarrow{{}}C{{H}_{3}}CHC{{H}_{3}}+B{{r}^{-}}}}\,\] done clear
  C)
  \[C{{H}_{3}}C{{H}_{2}}OH\xrightarrow{-{{H}_{2}}O}C{{H}_{2}}=C{{H}_{2}}\] done clear
  D)
  \[\underset{\underset{\,Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,H\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}\,}{\mathop{\overset{\overset{C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}\,}{\mathop{C{{H}_{3}}-C-C{{H}_{3}}+O{{H}^{-}}\to C{{H}_{3}}-C-O-C{{H}_{3}}+B{{r}^{-}}}}\,}}\,\] done clear
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• question_answer13)
  Wurtz reaction of methyl iodide yields an organic compound X. Which one of the following reactions also yields X [EAMCET 2003]
  A)
  \[{{C}_{2}}{{H}_{5}}Cl+Mg\xrightarrow{\text{dryethe}r}\] done clear
  B)
  \[{{C}_{2}}{{H}_{5}}Cl+LiAl{{H}_{4}}\xrightarrow{{}}\] done clear
  C)
  \[{{C}_{2}}{{H}_{5}}Cl+{{C}_{2}}{{H}_{5}}ONa\xrightarrow{{}}\] done clear
  D)
   \[CHC{{l}_{3}}\underset{\Delta }{\mathop{\xrightarrow{Ag\ \text{powder}}}}\,\] done clear
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• question_answer14)
  Ethyl orthoformate is formed by heating with sodium ethoxide [EAMCET 2003]
  A)
  \[CHC{{l}_{3}}\] done clear
  B)
  \[{{C}_{2}}{{H}_{5}}OH\] done clear
  C)
  \[HCOOH\] done clear
  D)
  \[C{{H}_{3}}CHO\] done clear
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• question_answer15)
  1 , 2 di-bromo cyclohexane on dehydro halogenation gives [UPSEAT 2003]
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  None of these done clear
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• question_answer16)
  In which one of the following conversions phosphorus pentachloride is used as a reagent [EAMCET 1997]
  A)
  \[{{H}_{2}}C=C{{H}_{2}}\to C{{H}_{3}}C{{H}_{2}}Cl\] done clear
  B)
  \[{{H}_{3}}C-O-C{{H}_{3}}\to C{{H}_{3}}Cl\] done clear
  C)
  \[C{{H}_{3}}C{{H}_{2}}OH\to C{{H}_{3}}C{{H}_{2}}Cl\] done clear
  D)
  \[HC\equiv CH\to C{{H}_{2}}=CHCl\] done clear
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• question_answer17)
  When but -3-en -2- ol reacts with aq. HBr, the product formed is [DCE 2001]
  A)
  3 - bromobut - 1- ene done clear
  B)
  1 - bromobut - 2- ene  done clear
  C)
  A mixture of both a and b done clear
  D)
  2 - bromobut - 2 - ene done clear
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• question_answer18)
  Which of these do not form Grignard reagent
  A)
  \[C{{H}_{3}}F\] done clear
  B)
  \[C{{H}_{3}}Cl\] done clear
  C)
  \[C{{H}_{3}}Br\] done clear
  D)
  \[C{{H}_{3}}I\] done clear
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• question_answer19)
  An organic compound \[A({{C}_{4}}{{H}_{6}}Cl)\] on reaction with Na/diethyl ether gives a hydrocarbon, which on monochlorination gives only one chloro derivative. A is [Kerala PMT 2004]
  A)
  t-butyl chloride done clear
  B)
  s-butyl chloride done clear
  C)
  Isobutyl chloride done clear
  D)
  n-butyl chloride done clear
  E)
  None of these done clear
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• question_answer20)
  Among the following the most reactive towards alcoholic KOH is [AIIMS 2004]
  A)
  \[C{{H}_{2}}=CHBr\] done clear
  B)
  \[C{{H}_{3}}COC{{H}_{2}}C{{H}_{2}}Br\] done clear
  C)
  \[C{{H}_{3}}C{{H}_{2}}Br\] done clear
  D)
  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}Br\] done clear
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• question_answer21)
  Which one of the following possess highest m.pt. [Pb. CET 2004]
  A)
  Chlorobenzene done clear
  B)
  o-dichlorobenzene done clear
  C)
  m-dichlorobenzene done clear
  D)
  p-dichlorobenzene done clear
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• question_answer22)
  Which chlorine atom is more electronegative in the following [UPSEAT 2004]
  A)
  \[C{{H}_{3}}-Cl\] done clear
  B)
  \[C{{H}_{3}}-C{{H}_{2}}-Cl\] done clear
  C)
  \[H-\underset{C{{H}_{3}}\ }{\overset{C{{H}_{3}}\ }{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,-Cl}}}\,\] done clear
  D)
  \[C{{H}_{3}}-C{{H}_{2}}-\underset{C{{H}_{3}}\ }{\overset{C{{H}_{3}}\ }{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,-Cl}}}\,\] done clear
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• question_answer23)
  What would be the product formed when 1-Bromo-3-chloro cyclobutane reacts with two equivalents of metallic sodium in ether [IIT-JEE (Screening) 2005]
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
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