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

done Preparation of Halogen containing compounds Total Questions - 54

• question_answer1)
  The following reaction is known as \[{{C}_{2}}{{H}_{5}}OH+SOC{{l}_{2}}\xrightarrow{\text{Pyridine}}{{C}_{2}}{{H}_{5}}Cl+S{{O}_{2}}+HCl\]  [AIIMS 2002]
  A)
  Kharasch effect done clear
  B)
  Darzen's procedure done clear
  C)
  Williamson's synthesis done clear
  D)
  Hunsdiecker synthesis reaction done clear
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• question_answer2)
  What is the main product of the reaction between 2-methyl propene with HBr [RPMT 2002]
  A)
  1-bromo butane done clear
  B)
  1-bromo-2 methyl propane done clear
  C)
  2-bromo butane done clear
  D)
  2-bromo-2 methyl propane done clear
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• question_answer3)
  Halogenation of alkanes is [KCET 2002]
  A)
  A reductive process done clear
  B)
  An oxidative process done clear
  C)
  An isothermal process done clear
  D)
  An indothermal process done clear
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• question_answer4)
  In the above process product A is [Kerala (Engg.) 2002]
  A)
  Fluorobenzene done clear
  B)
    Benzene done clear
  C)
    1, 4-difluorobenzene done clear
  D)
    1, 3-difluorobenzene done clear
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• question_answer5)
  Silver acetate\[+\ B{{r}_{2}}\xrightarrow{\text{C}{{\text{S}}_{\text{2}}}}\]. The main product of this reaction is     [Kurukshetra CET 2002]
  A)
  \[C{{H}_{3}}-Br\] done clear
  B)
  \[C{{H}_{3}}COI\] done clear
  C)
  \[C{{H}_{3}}COOH\] done clear
  D)
  None of these done clear
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• question_answer6)
  Diazonium salts  the reaction is known as   [Kerala (Med.) 2002]
  A)
  Chlorination done clear
  B)
  Sandmeyer's reaction done clear
  C)
  Perkin reaction done clear
  D)
  Substitution reaction done clear
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• question_answer7)
  When ethyl alcohol\[({{C}_{2}}{{H}_{5}}OH)\]reacts with thionyl chloride, in the presence of pyridine,  the product obtained is [AIIMS; CBSE PMT 2001]
  A)
  \[C{{H}_{3}}C{{H}_{2}}Cl+HCl\] done clear
  B)
  \[{{C}_{2}}{{H}_{5}}Cl+HCl+S{{O}_{2}}\] done clear
  C)
  \[C{{H}_{3}}C{{H}_{2}}Cl+{{H}_{2}}O+S{{O}_{2}}\] done clear
  D)
  \[C{{H}_{3}}C{{H}_{2}}Cl+HCl+S{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer8)
  Preparation of alkyl halides in laboratory is least preferred by [DPMT 2000]
  A)
  Treatment of alcohols done clear
  B)
  Addition of hydrogen halides to alkenes done clear
  C)
  Halide exchange done clear
  D)
  Direct halogenation of alkanes done clear
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• question_answer9)
  Which of the following organic compounds will give a mixture of 1-chlorobutane and 2-chlorobutane on chlorination [CPMT 2001]
  A)
  \[C{{H}_{3}}-\underset{C{{H}_{3}}\,\,\,\,\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{CH-CH}}\,}}\,=C{{H}_{2}}\] done clear
  B)
  \[HC\equiv C-\overset{H\,\,}{\mathop{\overset{|\,\,\,\,\,\,}{\mathop{C=}}\,}}\,C{{H}_{2}}\] done clear
  C)
  \[C{{H}_{2}}=CH-CH=C{{H}_{2}}\] done clear
  D)
  \[C{{H}_{2}}=CH-C{{H}_{2}}-C{{H}_{3}}\] done clear
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• question_answer10)
  The chlorobenzene is generally obtained from a corresponding diazonium salt by reacting it with [MP PMT 2000]
  A)
  \[C{{u}_{2}}C{{l}_{2}}\] done clear
  B)
  \[CuS{{O}_{4}}\] done clear
  C)
  \[Cu\] done clear
  D)
  \[Cu(N{{H}_{3}})_{4}^{2+}\] done clear
  View Solution play_arrow

• question_answer11)
  Decreasing order of reactivity of\[HX\]in the reaction \[ROH+HX\to RX+{{H}_{2}}O\] [RPET 2000; AIIMS 1983; MP PET 1996]
  A)
  \[HI>HBr>HCl>HF\] done clear
  B)
  \[HBr>HCl>HI>HF\] done clear
  C)
  \[HCl>HBr>HI>HF\] done clear
  D)
  \[HF>HBr>HCl>HI\] done clear
  View Solution play_arrow

• question_answer12)
  The product of the following reaction : \[C{{H}_{2}}=CH-CC{{l}_{3}}+HBr\] [RPET 2000]
  A)
  \[C{{H}_{3}}-CH(Br)-CC{{l}_{3}}\] done clear
  B)
  \[C{{H}_{2}}(Br)-C{{H}_{2}}-CC{{l}_{3}}\] done clear
  C)
  \[BrC{{H}_{2}}-CHCl-CHC{{l}_{2}}\] done clear
  D)
  \[C{{H}_{3}}-C{{H}_{2}}-CC{{l}_{3}}\] done clear
  View Solution play_arrow

• question_answer13)
  Chlorobenzene is prepared commercially by [JIPMER 2000; CPMT 1976; Pb. CET 2002]
  A)
  Raschig process done clear
  B)
  Wurtz Fitting reaction done clear
  C)
  Friedel-Craft?s reaction done clear
  D)
  Grignard reaction done clear
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• question_answer14)
  In methyl alcohol solution, bromine reacts with ethylene to yield \[BrC{{H}_{2}}C{{H}_{2}}OC{{H}_{3}}\] in addition to 1, 2-dibromoethane because [Pb. PMT 1998]
  A)
  The ion formed initially may react with \[B{{r}^{-}}\] or \[C{{H}_{3}}OH\] done clear
  B)
  The methyl alcohol solvates the bromine done clear
  C)
  The reaction follows Markownikoff's rule done clear
  D)
  This is a free-radical mechanism done clear
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• question_answer15)
  \[{{C}_{3}}{{H}_{8}}+C{{l}_{2}}\xrightarrow{\text{Light}}{{C}_{3}}{{H}_{7}}Cl+HCl\] is an example of which of the following types of reactions [AFMC 1997; CPMT 1999]
  A)
  Substitution done clear
  B)
  Elimination done clear
  C)
  Addition done clear
  D)
  Rearrangement done clear
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• question_answer16)
  Which of the following would be produced when acetylene reacts with HCl [MH CET 1999]
  A)
  \[C{{H}_{3}}C{{H}_{2}}Cl\] done clear
  B)
  \[C{{H}_{3}}CHC{{l}_{2}}\] done clear
  C)
  \[CHCl=CHCl\] done clear
  D)
  \[C{{H}_{2}}=CHCl\] done clear
  View Solution play_arrow

• question_answer17)
  \[R-OH+HX\to R-X+{{H}_{2}}O\] In the above reaction, the reactivity of different alcohols is [CPMT 1997]
  A)
  Tertiary > Secondary > Primary done clear
  B)
  Tertiary < Secondary < Primary done clear
  C)
  Tertiary < Secondary > Primary done clear
  D)
  Secondary < Primary < Tertiary done clear
  View Solution play_arrow

• question_answer18)
  \[{{C}_{6}}{{H}_{6}}+C{{l}_{2}}\xrightarrow{UV\text{ Light}}\] Product. In above reaction product is [CPMT 1997]
  A)
  \[CC{{l}_{3}}CHO\] done clear
  B)
  \[{{C}_{6}}{{H}_{6}}C{{l}_{6}}\] done clear
  C)
  \[{{C}_{6}}{{H}_{12}}C{{l}_{6}}\] done clear
  D)
  \[{{C}_{6}}{{H}_{9}}C{{l}_{2}}\] done clear
  View Solution play_arrow

• question_answer19)
  Benzene reacts with chlorine to form benzene hexachloride in presence of [MP PET 1999]
  A)
  Nickel done clear
  B)
  \[AlC{{l}_{3}}\] done clear
  C)
  Bright sunlight done clear
  D)
  Zinc done clear
  View Solution play_arrow

• question_answer20)
  The final product obtained by distilling ethyl alcohol with the excess of chlorine and \[Ca{{(OH)}_{2}}\] is [MP PET 1996]
  A)
  \[C{{H}_{3}}CHO\] done clear
  B)
  \[CC{{l}_{3}}CHO\] done clear
  C)
  \[CHC{{l}_{3}}\] done clear
  D)
  \[{{(C{{H}_{3}})}_{2}}O\] done clear
  View Solution play_arrow

• question_answer21)
  When ethyl alcohol and KI reacted in presence of \[N{{a}_{2}}C{{O}_{3}},\] yellow crystals of...... are formed [AFMC 1989]
  A)
  \[CH{{I}_{3}}\] done clear
  B)
  \[C{{H}_{3}}I\] done clear
  C)
  \[C{{H}_{2}}{{I}_{2}}\] done clear
  D)
  \[{{C}_{2}}{{H}_{5}}I\] done clear
  View Solution play_arrow

• question_answer22)
  In preparation of \[CHC{{l}_{3}}\] from ethanol and bleaching powder, the  latter provides [BHU 1986]
  A)
  \[Ca{{(OH)}_{2}}\] done clear
  B)
  \[C{{l}_{2}}\] done clear
  C)
  Both A and B done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer23)
  Which one of the  following processes does not occur during formation of \[CHC{{l}_{3}}\] from \[{{C}_{2}}{{H}_{5}}OH\] and bleaching powder [DPMT 1984]
  A)
  Hydrolysis done clear
  B)
  Oxidation done clear
  C)
  Reduction done clear
  D)
  Chlorination done clear
  View Solution play_arrow

• question_answer24)
  Which of the following is obtained when chloral is boiled with NaOH [CBSE PMT 1991; RPMT 1999]
  A)
  \[C{{H}_{3}}Cl\] done clear
  B)
  \[CHC{{l}_{3}}\] done clear
  C)
  \[CC{{l}_{4}}\] done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer25)
  Chloroform can be obtained from [MNR 1986]
  A)
  Methanol done clear
  B)
  Methanal done clear
  C)
  Propanol-1 done clear
  D)
  Propanol-2 done clear
  View Solution play_arrow

• question_answer26)
  Chlorine reacts with ethanol to give [MP PMT 1989; CPMT 1997; KCET 1998; JIPMER 1999]
  A)
  Ethyl chloride done clear
  B)
  Chloroform done clear
  C)
  Acetaldehyde done clear
  D)
  Chloral done clear
  View Solution play_arrow

• question_answer27)
  On heating diethyl ether with conc. HI, 2 moles of which of the following is formed [IIT-JEE 1983; MP PET 1990; EAMCET 1990; AFMC 1993; JIPMER 2001]
  A)
  Ethanol done clear
  B)
  Iodoform done clear
  C)
  Ethyl iodide done clear
  D)
  Methyl iodide done clear
  View Solution play_arrow

• question_answer28)
  Lucas reagent is [MP PMT 1996; MP PET 1992, 95; CPMT 1986, 89; AIIMS 1980; Kurukshetra CEE 2002]
  A)
  Concentrated \[HCl+\text{anhydrous }ZnC{{l}_{2}}\] done clear
  B)
  Dilute \[HCl+\text{ hydrated }ZnC{{l}_{2}}\] done clear
  C)
  Concentrated \[HN{{O}_{3}}+\text{ anhydrous }ZnC{{l}_{2}}\] done clear
  D)
  Concentrated \[HCl+\text{ anhydrous }MgC{{l}_{2}}\] done clear
  View Solution play_arrow

• question_answer29)
  Which compound does not form iodoform with alkali and iodine [IIT-JEE 1985]
  A)
  Acetone done clear
  B)
  Ethanol done clear
  C)
  Diethyl ketone done clear
  D)
  Isopropyl alcohol done clear
  View Solution play_arrow

• question_answer30)
  Which compound gives yellow ppt. with iodine and alkali [IIT-JEE 1984]
  A)
  2-hydroxy propane done clear
  B)
  Acetophenone done clear
  C)
  Methyl acetone done clear
  D)
  Acetamide done clear
  View Solution play_arrow

• question_answer31)
  Acetone reacts with \[{{I}_{2}}\] in presence of \[NaOH\] to form [MP PMT 1992]
  A)
  \[{{C}_{2}}{{H}_{5}}I\] done clear
  B)
  \[{{C}_{2}}{{H}_{4}}{{I}_{2}}\] done clear
  C)
  \[CH{{I}_{3}}\] done clear
  D)
  \[C{{H}_{3}}I\] done clear
  View Solution play_arrow

• question_answer32)
  Ethanol is converted into ethyl chloride by reacting with [MP PET 1991; MP PMT 1990; BHU 1997]
  A)
  \[C{{l}_{2}}\] done clear
  B)
  \[SOC{{l}_{2}}\] done clear
  C)
  HCl done clear
  D)
  NaCl done clear
  View Solution play_arrow

• question_answer33)
  \[{{C}_{6}}{{H}_{5}}Cl\] prepared by aniline with [IIT-JEE 1984]
  A)
  HCl done clear
  B)
  \[C{{u}_{2}}C{{l}_{2}}\] done clear
  C)
  \[C{{l}_{2}}\] in presence of anhydrous \[AlC{{l}_{3}}\] done clear
  D)
  \[HN{{O}_{2}}\] and then heated with \[C{{u}_{2}}C{{l}_{2}}\] done clear
  View Solution play_arrow

• question_answer34)
  The starting substance for the preparation of \[C{{H}_{3}}I\] is [CPMT 1975]
  A)
  \[C{{H}_{3}}OH\] done clear
  B)
  \[{{C}_{2}}{{H}_{5}}OH\] done clear
  C)
  \[C{{H}_{3}}CHO\] done clear
  D)
  \[{{(C{{H}_{3}})}_{2}}CO\] done clear
  View Solution play_arrow

• question_answer35)
  A Grignard's reagent may be made by reacting magnesium with [CPMT 1973, 83, 84]
  A)
  Methyl amine done clear
  B)
  Diethyl ether done clear
  C)
  Ethyl iodide done clear
  D)
  Ethyl alcohol done clear
  View Solution play_arrow

• question_answer36)
  Which of the following is responsible for iodoform reaction [CPMT 1980; RPMT 1997]
  A)
  Formalin done clear
  B)
  Methanol done clear
  C)
  Acetic acid done clear
  D)
  Ethanol done clear
  View Solution play_arrow

• question_answer37)
  When a solution of sodium chloride containing ethyl alcohol is electrolysed, it forms
  A)
  Ethyl alcohol done clear
  B)
  Chloral done clear
  C)
  Chloroform done clear
  D)
  Acetaldehyde done clear
  View Solution play_arrow

• question_answer38)
  Which reagent cannot be used to prepare an alkyl halide from an alcohol [CPMT 1989, 94]
  A)
  \[HCl+ZnC{{l}_{2}}\] done clear
  B)
  NaCl done clear
  C)
  \[PC{{l}_{5}}\] done clear
  D)
  \[SOC{{l}_{3}}\] done clear
  View Solution play_arrow

• question_answer39)
  Ethyl benzoate reacts with \[PC{{l}_{5}}\]to give [KCET 2003]
  A)
  \[{{C}_{2}}{{H}_{5}}Cl+{{C}_{6}}{{H}_{5}}COCl+POC{{l}_{3}}+HCl\] done clear
  B)
  \[{{C}_{2}}{{H}_{5}}Cl+{{C}_{6}}{{H}_{5}}COCl+POC{{l}_{3}}\] done clear
  C)
  \[C{{H}_{3}}COCl+{{C}_{6}}{{H}_{5}}COCl+POC{{l}_{3}}\] done clear
  D)
  \[{{C}_{2}}{{H}_{5}}Cl+{{C}_{6}}{{H}_{5}}COOH+POC{{l}_{3}}\] done clear
  View Solution play_arrow

• question_answer40)
  On treatment with chlorine in presence of sunlight, toluene giv.es the product [Orissa JEE 2003; MH CET 1999, 2002]
  A)
  o-chloro toluene done clear
  B)
  2, 5-dichloro toluene done clear
  C)
  p-chloro toluene done clear
  D)
  Benzyl chloride done clear
  View Solution play_arrow

• question_answer41)
  When chlorine is passed through warm benzene in presence of the sunlight, the product obtained is [KCET 2003]
  A)
  Benzotrichloride done clear
  B)
  Chlorobenzene done clear
  C)
  Gammexane done clear
  D)
  DDT done clear
  View Solution play_arrow

• question_answer42)
  Which of the following acids adds to propene in the presence of peroxide to give anti-Markownikoff?s product [MP PET 2003]
  A)
  \[HF\] done clear
  B)
  \[HCl\] done clear
  C)
  \[HBr\] done clear
  D)
  \[HI\] done clear
  View Solution play_arrow

• question_answer43)
  Propene on treatment with HBr gives [CPMT 1986]
  A)
  Isopropyl bromide done clear
  B)
  Propyl bromide done clear
  C)
  1, 2-dibromoethane done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer44)
  The catalyst used in Raschig's process is
  A)
  \[LiAl{{H}_{4}}\] done clear
  B)
  Copper chloride done clear
  C)
  Sunlight done clear
  D)
  \[{\text{Ethanol}}/{Na}\;\] done clear
  View Solution play_arrow

• question_answer45)
  The compound formed on heating chlorobenzene with chloral in the presence of concentrated sulphuric acid, is [AIEEE 2004]
  A)
  Freon done clear
  B)
  DDT done clear
  C)
  Gammexene done clear
  D)
  Hexachloroethane done clear
  View Solution play_arrow

• question_answer46)
  Acetone is mixed with bleaching powder to give [AFMC 2004]
  A)
  Chloroform done clear
  B)
  Acetaldehyde done clear
  C)
  Ethanol done clear
  D)
  Phosgene done clear
  View Solution play_arrow

• question_answer47)
  Which of the following compounds gives trichloromethane on distilling with bleaching powder [KCET 2004; EAMCET 1986]
  A)
  Methanal done clear
  B)
  Phenol done clear
  C)
  Ethanol done clear
  D)
  Methanol done clear
  View Solution play_arrow

• question_answer48)
  The product formed on reaction of ethyl alcohol with bleaching powder is [Orissa JEE 2004; DPMT 1978; AIIMS 1991]
  A)
  \[CHC{{l}_{3}}\] done clear
  B)
  \[CC{{l}_{3}}CHO\] done clear
  C)
  \[C{{H}_{3}}COC{{H}_{3}}\] done clear
  D)
  \[C{{H}_{3}}CHO\] done clear
  View Solution play_arrow

• question_answer49)
  Ethylene reacts with bromine to form [Pb. CET 2000]
  A)
  Chloroethane done clear
  B)
  Ethylene dibromide done clear
  C)
  Cyclohexane done clear
  D)
  1-bromo propane done clear
  View Solution play_arrow

• question_answer50)
  Best method of preparing alkyl chloride is [MH CET 2004]
  A)
  \[ROH+SOC{{l}_{2}}\xrightarrow{\ \ \ \ \ \ \ \ \ }\] done clear
  B)
  \[ROH+PC{{l}_{5}}\xrightarrow{\ \ \ \ \ \ \ \ \ \ \ \ }\] done clear
  C)
  \[ROH+PC{{l}_{3}}\xrightarrow{\ \ \ \ \ \ \ \ \ \ \ \ }\] done clear
  D)
  \[ROH+HCl\xrightarrow{\text{anhy}\text{. }ZnC{{l}_{2}}}\] done clear
  View Solution play_arrow

• question_answer51)
  DDT is prepared by reacting chlorobenzene with [BHU 1998, 2005]
  A)
  \[CC{{l}_{4}}\] done clear
  B)
  \[CC{{l}_{3}}-CHO\] done clear
  C)
  \[CHC{{l}_{3}}\] done clear
  D)
  Ethane done clear
  View Solution play_arrow

• question_answer52)
  Which compound needs chloral in its synthesis    [Pb. PET 2003]
  A)
  D. D. T. done clear
  B)
  Gammexane done clear
  C)
  Chloroform done clear
  D)
  Michler?s Ketone done clear
  View Solution play_arrow

• question_answer53)
  To get DDT, chlorobenzene has to react with which of the following compounds in the presence of concentrated sulphuric acid [KCET (Engg/Med.) 2001]
  A)
  Trichloroethane done clear
  B)
  Dichloroacetone done clear
  C)
  Dichloroacetaldehyde done clear
  D)
  Trichloroacetaldehyde done clear
  View Solution play_arrow

• question_answer54)
  What will be the product in the following reaction [BHU 2005]
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow