12th Class Chemistry Haloalkanes and Haloarenes / हैलोएल्केन तथा हैलोएरीन्स Question Bank

done MCQs - Haloalkanes and Haloarenes Total Questions - 60

• question_answer1)
  Which of the following halides is not correct according to the name and classification?
  A)
  \[C{{H}_{3}}C{{H}_{2}}C{{\left( C{{H}_{3}} \right)}_{2}}C{{H}_{2}}I\]-1-Iodo-2,2-dimethyl- butane, Primary haloalkane done clear
  B)
  \[{{\left( C{{H}_{3}} \right)}_{2}}CHCH\left( Cl \right)C{{H}_{3}}\]-2-Chloro-3-methyl- butane, Secondary haloalkane done clear
  C)
  \[C{{H}_{3}}C\left( Cl \right)\left( {{C}_{2}}{{H}_{5}} \right)C{{H}_{2}}C{{H}_{3}}\]- 2-Chloro-2- ethyl butane, Secondary haloalkane done clear
  D)
  Secondary haloalkane done clear
  View Solution play_arrow

• question_answer2)
  Which of the following is halogen exchange reaction?
  A)
  \[RX+NaI\to RI+NaX\] done clear
  B)
  done clear
  C)
  \[R-OH+HX\xrightarrow{ZnC{{l}_{2}}}R-X+{{H}_{2}}O\] done clear
  D)
  done clear
  View Solution play_arrow

• question_answer3)

  Halogen acids react with alcohols to form alkyl halides. The reaction follows a nucleophilic substitution mechanism. What will be the major product of the following reaction?

  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}Cl\] done clear
  View Solution play_arrow

• question_answer4)
  The negative part of the addendum (the molecule to be added) adds on to the carbon atom of the double bond containing the least number of hydrogen atoms. This rule is known as
  A)
  Saytzeff's rule done clear
  B)
  Peroxide rule done clear
  C)
  Markovnikov's rule done clear
  D)
  van't Hoff rule done clear
  View Solution play_arrow

• question_answer5)

  Which of the following structures is enantiomeric with the molecule (P) given below :

  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer6)

  The end product (Q) in the following sequence of reactions is

  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer7)

  The reaction

  is an example of

  A)
  nucleophilic addition done clear
  B)
  free radical addition done clear
  C)
  electrophilic addition done clear
  D)
  electrophilic substitution. done clear
  View Solution play_arrow

• question_answer8)

  Classify the following compounds as primary, secondary and tertiary halides.

  (i) 1-Bromobut-2-ene

  (ii) 4-Bromopent-2-ene

  (iii) 2-Bromo-2-methylpropane

  A)
  (i)-secondary, (ii)-tertiary, (iii)-primary done clear
  B)
  (i)-secondary, (ii)-primary, (iii)-tertiary done clear
  C)
  (i)-primary, (ii)-tertiary, (iii)-secondary done clear
  D)
  (i)-primary, (ii)-secondary, (iii)-tertiary done clear
  View Solution play_arrow

• question_answer9)
  The order of reactivity of various alkyl halides towards nucleophilic substitution follows the order
  A)
  \[R-I>R-Br>R-Cl>R-F\] done clear
  B)
  \[R-F>R-Cl>R-Br>R-I\] done clear
  C)
  \[R-Cl>R-Br>R-I>R-F\] done clear
  D)
  \[R-Br>R-I>R-Cl>R-F\] done clear
  View Solution play_arrow

• question_answer10)

  Arrange the following compounds in the increasing order of their densities.

  (i)

  (ii)

  (iii)

  (iv)

  A)
  i < ii < iii < iv done clear
  B)
  i < iii < iv < ii done clear
  C)
  iv < iii < ii < i done clear
  D)
  ii < iv < iii < i done clear
  View Solution play_arrow

• question_answer11)
  Arrange the following alkyl halides in order of dehydrohalogenation; \[{{C}_{2}}{{H}_{5}}I,\,{{C}_{2}}{{H}_{5}}Cl,\,{{C}_{2}}{{H}_{5}}Br,\,{{C}_{2}}{{H}_{5}}F\]
  A)
  \[{{C}_{2}}{{H}_{5}}F>{{C}_{2}}{{H}_{5}}Cl>{{C}_{2}}{{H}_{5}}Br>{{C}_{2}}{{H}_{5}}I\] done clear
  B)
  \[{{C}_{2}}{{H}_{5}}I>{{C}_{2}}{{H}_{5}}Br>{{C}_{2}}{{H}_{5}}Cl>{{C}_{2}}{{H}_{5}}F\] done clear
  C)
  \[{{C}_{2}}{{H}_{5}}I>{{C}_{2}}{{H}_{5}}Cl>{{C}_{2}}{{H}_{5}}Br>{{C}_{2}}{{H}_{5}}F\] done clear
  D)
  \[{{C}_{2}}{{H}_{5}}F>{{C}_{2}}{{H}_{5}}I>{{C}_{2}}{{H}_{5}}Br>{{C}_{2}}{{H}_{5}}Cl\] done clear
  View Solution play_arrow

• question_answer12)

  Haloalkanes contain halogen atom(s) attached to the \[s{{p}^{3}}\] hybridised carbon atom of an alkyl group. Identify haloalkane from the following compounds.

  (i) 2-Bromopentane

  (ii) Vinyl chloride (chloroethene)

  (iii) Chlorobenzene

  (iv) Trichloromethane

   
  A)
  Only (ii) done clear
  B)
  (ii) and (iv) done clear
  C)
  (i) and (iv) done clear
  D)
  (i), (ii) and (iii) done clear
  View Solution play_arrow

• question_answer13)
  Which of the following haloalkanes react; with aqueous KOH most easily?
  A)
  1-Bromobutane done clear
  B)
  2-Bromobutane done clear
  C)
  2-Bromo-2-methylpropane done clear
  D)
  2-Chlorobutane done clear
  View Solution play_arrow

• question_answer14)
  Which of the following is a primary halide
  A)
  iso-Propyl iodide done clear
  B)
  sec-Butyl iodide done clear
  C)
  ter-Butyl bromide done clear
  D)
  neo-Hexyl chloride done clear
  View Solution play_arrow

• question_answer15)
  Which of the following is most reactive towards aqueous NaOH?
  A)
  \[{{C}_{6}}{{H}_{5}}Cl\] done clear
  B)
  \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}Cl\] done clear
  C)
  \[{{C}_{6}}{{H}_{5}}Br\] done clear
  D)
  \[Br{{C}_{6}}{{H}_{4}}Br\] done clear
  View Solution play_arrow

• question_answer16)
  Which of the following products does no
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer17)

  Arrange the following compounds in decreasing order of their boiling points.

  (i) \[C{{H}_{3}}Br\]

  (ii) \[C{{H}_{3}}C{{H}_{2}}Br\]

  (iii) \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}Br\]

  (iv) \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}Br\]

  A)
  (i) > (ii) > (iii) > (iv) done clear
  B)
  (iv) > (iii) > (ii) > (i) done clear
  C)
  (i) > (iii) > (ii) > (iv) done clear
  D)
  (iii) > (iv) > (i) > (ii) done clear
  View Solution play_arrow

• question_answer18)

  Arrange the following compounds in order of their reactivity towards \[{{S}_{N}}2\] reaction.

  (i) \[C{{H}_{3}}{{\left( C{{H}_{2}} \right)}_{3}}C{{H}_{2}}Br\]

  (ii) \[{{\left( C{{H}_{3}} \right)}_{2}}CHC{{H}_{2}}C{{H}_{2}}Br\]

  (iii)

  (iv)

  A)
  (i) > (ii) > (iii) > (iv) done clear
  B)
  (ii) > (iii) > (iv) > (i) done clear
  C)
  (iii) > (i) > (ii) > (iv) done clear
  D)
  (iv) > (ii) > (i) > (iii) done clear
  View Solution play_arrow

• question_answer19)

  In the following pairs of halogen compounds, which compound undergoes faster \[{{S}_{N}}1\] reaction?

  (i) and

  (ii)  and

  A)
  (i)  (ii) done clear
  B)
  (i)  (ii) done clear
  C)
  (i)  (ii) done clear
  D)
  (i) (ii) done clear
  View Solution play_arrow

• question_answer20)
  Among the choices of alkyl bromide, the least reactive bromide in \[{{S}_{N}}2\] reaction is
  A)
  1-bromopentane done clear
  B)
  2-bromo-2-methylbutane done clear
  C)
  1-bromo-3-methylbutane done clear
  D)
  1-bromo-2-methylbutane. done clear
  View Solution play_arrow

• question_answer21)

  Consider the following reaction :

  The reaction proceeds with 98% racemisation.

  The reaction may follow

  A)
  \[{{S}_{N}}1\] mechanism done clear
  B)
  \[{{S}_{N}}2\] mechanism done clear
  C)
  E1 mechanism done clear
  D)
  E2 mechanism. done clear
  View Solution play_arrow

• question_answer22)

  Identify the products [A] and [B] in the reactions.

  \[RX+AgCN\to (A)+AgX\];

  \[RX+KCN\to (B)+KX\]

  A)
  \[(A)\to RCN,\,(B)\to RCN\] done clear
  B)
  \[(A)\to RCN,\,(B)\to RNC\] done clear
  C)
  \[(A)\to RNC,\,(B)\to RCN\] done clear
  D)
  \[(A)\to RNC,\,(B)\to RNC\] done clear
  View Solution play_arrow

• question_answer23)
  Butane nitrile can be prepared by heating
  A)
  propyl alcohol with KCN done clear
  B)
  butyl chloride with KCN done clear
  C)
  butyl alcohol with KCN done clear
  D)
  propyl chloride with KCN. done clear
  View Solution play_arrow

• question_answer24)
  Methyl bromide reacts with AgF to give methyl fluoride and silver bromide. This reaction is called
  A)
  Fittig reaction done clear
  B)
  Swarts reaction done clear
  C)
  Wurtz reaction done clear
  D)
  Finkelstein reaction. done clear
  View Solution play_arrow

• question_answer25)
  The alkyl halide is converted into an alcohol by
  A)
  elimination done clear
  B)
  dehydrohalogenation done clear
  C)
  addition done clear
  D)
  substitution. done clear
  View Solution play_arrow

• question_answer26)
  Which of the following compounds can yield only one monochlorinated product upon free radical chlorination?
  A)
  2, 2-Dimethylpropane done clear
  B)
  2-Methylpropane done clear
  C)
  2-Methylbutane done clear
  D)
  n-Butane done clear
  View Solution play_arrow

• question_answer27)
  Which of the following statements is not correct about \[{{S}_{N}}2\] reactions of alkyl halides?
  A)
  Nucleophile attacks the carbon from the side opposite to where the leaving group is attached. done clear
  B)
  The bond formation and bond breaking take place in one step. done clear
  C)
  The rate of reaction depends upon the concentration of nucleophile. done clear
  D)
  \[{{S}_{N}}2\] mechanism is predominant is tertiary alkyl halides. done clear
  View Solution play_arrow

• question_answer28)

  In the reaction given below :

  Which of the following statements is correct?

  A)
  The reaction proceeds via \[{{S}_{N}}2\] mechanism hence inversion of configuration takes place. done clear
  B)
  The reaction proceeds via \[{{S}_{N}}1\] mechanism hence inversion of configuration takes place. done clear
  C)
  The reaction proceeds via \[{{S}_{N}}2\] mechanism hence their is no change in the configuration. done clear
  D)
  The reaction proceeds via \[{{S}_{N}}1\] mechanism hence there is no change in the configuration. done clear
  View Solution play_arrow

• question_answer29)
  2-Bromo-3, 3-dimethylbutane on reaction with aqueous KOH yields X as the major product. X is
  A)
  2, 3, 3-trimethylpropan-1-ol done clear
  B)
  2, 2-dimethylbutan-3-ol done clear
  C)
  2, 3-dimethylbutan-2-ol done clear
  D)
  2, 2-dimethylpropan-2-ol. done clear
  View Solution play_arrow

• question_answer30)

  In the given reaction what will be the final product?

  A)
  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}I\] done clear
  B)
  \[C{{H}_{3}}CHIC{{H}_{2}}I\] done clear
  C)
  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\] done clear
  D)
  \[C{{H}_{3}}C{{H}_{2}}CH{{I}_{2}}\] done clear
  View Solution play_arrow

• question_answer31)
  A mixture of two haloalkanes was treated with sodium metal in ether solution. After the reaction, the product formed was 2-methylpropane. The two haloalkanes present in the mixture were
  A)
  2-chloropropane and chloromethane done clear
  B)
  chloropropane and chloroethane done clear
  C)
  2-chloropropane and chloroethane done clear
  D)
  chloroethane and chloromethane. done clear
  View Solution play_arrow

• question_answer32)
  Tertiary alkyl halides are practically inert substitution by \[{{S}_{N}}2\] mechanism because
  A)
  the carbocation formed is unstable done clear
  B)
  is steric hindrance done clear
  C)
  is inductive effect done clear
  D)
  the rate of reaction is faster in  \[{{S}_{N}}2\] mechanism. done clear
  View Solution play_arrow

• question_answer33)
  An alkyl halide, RX reacts with KCN to give propane nitrile. RX is
  A)
  \[{{C}_{3}}{{H}_{7}}Br\] done clear
  B)
  \[{{C}_{4}}{{H}_{9}}Br\] done clear
  C)
  \[{{C}_{2}}{{H}_{5}}Br\] done clear
  D)
  \[{{C}_{5}}{{H}_{11}}Br\] done clear
  View Solution play_arrow

• question_answer34)
  Which of the following will give enantiomeric pair on reaction with water due to presence of asymmetric carbon atom?
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer35)
  Which of the following is the most reactive towards nucleophilic substitution reaction?
  A)
  \[ClC{{H}_{2}}-CH=C{{H}_{2}}\] done clear
  B)
  \[C{{H}_{2}}=CH-Cl\] done clear
  C)
  \[C{{H}_{3}}CH=CH-Cl\] done clear
  D)
  \[{{C}_{6}}{{H}_{5}}Cl\] done clear
  View Solution play_arrow

• question_answer36)
  \[{{S}_{N}}1\]reaction is fastest in
  A)
  \[C{{H}_{3}}C{{H}_{2}}Br\] done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer37)
  Ethyl alcohol is obtained when ethyl chloride is boiled with
  A)
  alcoholic KOH done clear
  B)
  aqueous KOH done clear
  C)
  water done clear
  D)
  aqueous \[KMn{{O}_{4}}\] done clear
  View Solution play_arrow

• question_answer38)
  The IUPAC name of tertiary butyl chloride is
  A)
  2-chloro-2-methypropane done clear
  B)
  3-chlorobutane done clear
  C)
  4-chlorobutane done clear
  D)
  1, 2-chloro-3-methylpropane. done clear
  View Solution play_arrow

• question_answer39)
  Which of the following reactions does not take place?
  A)
  \[{{C}_{2}}{{H}_{5}}Br+KN{{O}_{2}}\to {{C}_{2}}{{H}_{5}}-O-N=O+KBr\] done clear
  B)
  \[{{C}_{2}}{{H}_{5}}Br+AgN{{O}_{2}}\to {{C}_{2}}{{H}_{5}}-\] +AgBr done clear
  C)
  \[{{C}_{2}}{{H}_{5}}Br+AgCN\to {{C}_{2}}{{H}_{5}}NC+AgBr\] done clear
  D)
  \[{{C}_{2}}{{H}_{5}}Br+KCN\to {{C}_{2}}{{H}_{5}}NC+KBr\] done clear
  View Solution play_arrow

• question_answer40)
  A compound X with molecular formula \[{{C}_{7}}{{H}_{8}}\] is treated with \[C{{l}_{2}}\] in presence of \[FeC{{l}_{3}}\]. Which of the following compounds are formed during the reaction?
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer41)

  Among the isomers of \[{{C}_{5}}{{H}_{11}}Cl\], the one which is chiral is

  (i)

  (ii)

  (iii)

  (iv)

  A)
  (i) and (ii) done clear
  B)
  (i), (ii) and (iii) done clear
  C)
  (i) and (iii) done clear
  D)
  only (ii) done clear
  View Solution play_arrow

• question_answer42)

  Which of the following reactions will give the major and minor products?

  \[C{{H}_{3}}-CH\underset{(A)}{\mathop{=}}\,CH-C{{H}_{3}}+C{{H}_{3}}-C{{H}_{2}}\underset{(B)}{\mathop{-}}\,CH=C{{H}_{2}}\]

   
  A)
  [A] is major product and [B] is minor product. done clear
  B)
  [A] is minor product and [B] is major product. done clear
  C)
  Both [A] and [B] are major products. done clear
  D)
  Only [B] is formed and [A] is not formed. done clear
  View Solution play_arrow

• question_answer43)
  Match the reactions given in column I with the type of reaction mentioned in column II and mark the appropriate choice.

  	Column I		Column II
  [A]		(i)	\[\beta \]-elimination
  [B]	\[C{{H}_{3}}C{{H}_{2}}Br\xrightarrow{AgOH}\]\[C{{H}_{3}}C{{H}_{2}}OH\]	(ii)	\[{{S}_{N}}1\]nucleophilic substitution
  [C]	\[C{{H}_{3}}CH=C{{H}_{2}}+HBr\] \[\xrightarrow{Peroxide}\] \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}Br\]	(iii)	\[{{S}_{N}}2\]nucleophilic substitution
  [D]	\[C{{H}_{3}}-C{{H}_{2}}Br+\] \[alc.KOH\to \] \[C{{H}_{2}}=C{{H}_{2}}\]	(iv)	Kharasch effect

  A)
  [A] \[\to \] (iv), [B]\[\to \] (i), [C] \[\to \](ii), [D] \[\to \](iii) done clear
  B)
  [A] \[\to \] (ii), [B] \[\to \] (iii), [C] \[\to \] (iv), [D] \[\to \] (i) done clear
  C)
  [A] \[\to \] (i), [B] \[\to \] (ii), [C] \[\to \] (iv), [D] \[\to \] (iii) done clear
  D)
  [A] \[\to \] (iii), [B] \[\to \] (i), [C] \[\to \] (ii), [D] \[\to \] (iv) done clear
  View Solution play_arrow

• question_answer44)

  An alkyl halide with molecular formula \[{{C}_{6}}{{H}_{13}}Br\] on dehydrohalogenation gives two isomeric alkenes X and Y with molecular formula \[{{C}_{6}}{{H}_{12}}\]. On reductive ozonolysis X and Y gave four compounds \[C{{H}_{3}}COC{{H}_{3}}\], \[C{{H}_{3}}CHO\], \[C{{H}_{3}}C{{H}_{2}}CHO\] and \[{{\left( C{{H}_{3}} \right)}_{2}}CHCHO\]. The alkyl halide is

  A)
  4-bromo-2-methylpentane done clear
  B)
  3-bromo-2-methylpentane done clear
  C)
  2-bromo-2, 3-dimethylbutane done clear
  D)
  2, 2-dimethyl-1-bromobutane. done clear
  View Solution play_arrow

• question_answer45)
  Which of the following is an example of vic-dihalide?
  A)
  Dichloromethane done clear
  B)
  1, 2-Dichloroethane done clear
  C)
  Ethylidene chloride done clear
  D)
  Allyl chloride done clear
  View Solution play_arrow

• question_answer46)
  In \[{{S}_{N}}2\] reactions the sequence of bond breaking and bond formation is as follows
  A)
  bond breaking is followed by formation done clear
  B)
  bond formation is followed by breaking done clear
  C)
  bond breaking and formation are simultaneously done clear
  D)
  bond breaking and formation take place randomly. done clear
  View Solution play_arrow

• question_answer47)

  X in the reaction is

  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer48)
  Which of the following alkyl halides undergoes hydrolysis with aqueous KOH at the fastest rate?
  A)
  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}Cl\] done clear
  B)
  \[C{{H}_{3}}C{{H}_{2}}Cl\] done clear
  C)
  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}Cl\] done clear
  D)
  \[C{{H}_{3}}C{{H}_{2}}CH(Br)C{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer49)
  A mixture of 1-chloropropane and 2-chloropropane when treated with alcoholic KOH gives
  A)
  prop-1-ene done clear
  B)
  prop-2-ene done clear
  C)
  a mixture of prop-1-ene and prop-2-ene done clear
  D)
  propanol. done clear
  View Solution play_arrow

• question_answer50)
  Consider the following reaction and identify X and Y. \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}I\xrightarrow{alc.\,KOH}X\xrightarrow{B{{r}_{2}}}Y\]
  A)

  X	Y
  \[C{{H}_{3}}CH=C{{H}_{2}}\]

  done clear
  B)

  X	Y
  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}OH\]	\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}Br\]

  done clear
  C)

  X	Y

  done clear
  D)

  X	Y
  \[C{{H}_{3}}CH=C{{H}_{2}}\]	\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}Br\]

  done clear
  View Solution play_arrow

• question_answer51)
  2-Chloro-2-methylpropane on reaction with alc. KOH gives X as the major product X is
  A)
  but-2-ene done clear
  B)
  2-methylbut-1-ene done clear
  C)
  2-methylbutane-1-ene done clear
  D)
  2-methylbutan-2-ol. done clear
  View Solution play_arrow

• question_answer52)
  Grignard reagent, a very useful starting compound for a number of organic reactions can be prepared by
  A)
  reaction of alkyl halides with a solution of magnesium hydroxide done clear
  B)
  reaction of alkyl halides with dry magnesium powder in presence of dry ether done clear
  C)
  reaction of \[MgC{{l}_{2}}\] with ether and alcohol done clear
  D)
  reaction of alkyl halide with magnesium in presence of alcohol. done clear
  View Solution play_arrow

• question_answer53)
  Which of the following reactions follows Martovnikov's rule?
  A)
  \[{{C}_{2}}{{H}_{4}}+HBr\] done clear
  B)
  \[{{C}_{3}}{{H}_{6}}+C{{l}_{2}}\] done clear
  C)
  \[{{C}_{3}}{{H}_{6}}+HBr\] done clear
  D)
  \[{{C}_{3}}{{H}_{6}}+B{{r}_{2}}\] done clear
  View Solution play_arrow

• question_answer54)

  X and Y in the reaction are

  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer55)

  Identify the products [A] and [B].

  (i)

  (ii)

  A)
  , done clear
  B)
  done clear
  C)
  done clear
  D)
  \[(A)\to C{{H}_{3}}C{{H}_{2}}-C{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\], done clear
  View Solution play_arrow

• question_answer56)
  Aryl halides are less reactive towards nucleophilic substitution reactions as compared to alkyl halides due to
  A)
  formation of a less stable carbonium ion in aryl halides done clear
  B)
  resonance stabilisation in aryl halides done clear
  C)
  presence of double bonds in alkyl halides done clear
  D)
  inductive effect in aryl halides. done clear
  View Solution play_arrow

• question_answer57)
  Which of the following reactions is not correctly matched?
  A)
  \[2{{C}_{2}}{{H}_{5}}Br+2Na\xrightarrow{dry\,ether}{{C}_{4}}{{H}_{10}}+2NaBr\]: Wurtz reaction done clear
  B)
  \[C{{H}_{3}}Br+AgF\to C{{H}_{3}}F+AgBr\]: Etards reaction done clear
  C)
  \[{{C}_{6}}{{H}_{5}}Br+2Na+Br{{C}_{2}}{{H}_{5}}\xrightarrow{dry\,ether}{{C}_{6}}{{H}_{5}}{{C}_{2}}{{H}_{5}}+2NaBr\]: Wurtz-Fitting reaction done clear
  D)
  \[2{{C}_{6}}{{H}_{5}}Br+2Na\xrightarrow{dry\,ether}{{C}_{6}}{{H}_{5}}-{{C}_{6}}{{H}_{5}}+2NaBr\]: Fitting reaction done clear
  View Solution play_arrow

• question_answer58)
  The main difference in C - X bond of a haloalkane and a haloarene is
  A)
  C - X bond in haloalkanes is shorter than haloarenes done clear
  B)
  in haloalkanes the C attached to halogen in C - X bond is \[s{{p}^{3}}\] hybridised while in haloarenes it is \[s{{p}^{2}}\] hybridized done clear
  C)
  C-X bond in haloarenes acquires a double bond character due to higher electronegativity of X than haloalkanes done clear
  D)
  haloalkanes are less reactive than haloarenes due to difficulty in C-X cleavage in haloalkanes. done clear
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• question_answer59)
  Match the column I with column II and mark the appropriate choice.

  	Column - I		Column - II
  [a]	\[C{{H}_{3}}CHC{{l}_{2}}\]	(i)	Vinyl halide
  [b]	\[C{{H}_{2}}ClC{{H}_{2}}Cl\]	(ii)	Alkylidene halide
  [c]	\[CHCl=C{{H}_{2}}\]	(iii)	Alkylene dihalide
  [d]	\[ClC{{H}_{2}}-CH=C{{H}_{2}}\]	(iv)	Allyl halide

  A)
  [A] \[\to \] (i), [B] \[\to \] (ii), [C] \[\to \] (iv), [D] \[\to \] (iii) done clear
  B)
  [A] \[\to \] (ii), [B] \[\to \] (iii), [C] \[\to \] (i), [D] \[\to \] (iv) done clear
  C)
  [A] \[\to \] (iii), [B] \[\to \] (iv), [C] \[\to \] (ii), [D] \[\to \] (i) done clear
  D)
  [A]\[\to \] (iv), [B] \[\to \] (i), [C] \[\to \] (iii), [D] \[\to \] (ii) done clear
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• question_answer60)
  Which is the correct increasing order of boiling points of the following compounds? 1-Iodobutane, 1-Bromobutane, 1-Chlorobutane, Butane
  A)
  Butane < 1-Chlorobutane < 1-Bromobutane < 1-Iodobutane done clear
  B)
  1-Iodobutane < 1-Bromobutane < 1-Chlorobutane < Butane done clear
  C)
  Butane < 1-Iodobutane < 1-Bromobutane < 1-Chlorobutane done clear
  D)
  Butane < 1-Chlorobutane < 1-Iodobutane < 1-Bromobutane done clear
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