JEE Main & Advanced Chemistry Hydrocarbons / हाइड्रोकार्बन Question Bank

done Mock Test - Hydrocarbons Total Questions - 25

• question_answer1)
  An alkane \[{{C}_{6}}{{H}_{14}}(X)\] can be obtained by reduction of five different alkyl halides \[{{C}_{6}}{{H}_{13}}Cl\] (only structural isomers) with\[ZnC{{H}_{3}}COOH\]. The IUPAC name of X satisfying above condition is
  A)
  hexane done clear
  B)
  2-methyl pentane done clear
  C)
  2, 3-dimethyl butane done clear
  D)
  2, 2-dimethyl butane done clear
  View Solution play_arrow

• question_answer2)
  In which of the following reactions, the Kolbe's electrolysis product is incorrectly mentioned?
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer3)
  An alkane (X) with its molecular formula \[{{C}_{6}}{{H}_{14}}\] can be obtained by reduction of only two isomeric alky1 chlorides (excluding stereoisomers) \[{{C}_{6}}{{H}_{13}}Cl\] with Zn acid. The alkyi chlorides are
  A)
  2-chloro-4-methyl pentane and 3-chloro-2-methyl pentane done clear
  B)
  3, 3-dimethyl-1-chlorobutane and 2, 2-dimethyl-3- chlorobutane done clear
  C)
  2, 3-dimethyl-1-chlorobutane and 2-chloro-2, 3-dimethyl butane done clear
  D)
  2-chlorohexane and 3-chlorohexane done clear
  View Solution play_arrow

• question_answer4)
  
  A)
  done clear
  B)
    done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer5)
  During free radical bromination of isobutene, an alkenei is produced as by product via disproportionation of the intermediate alkyl free radical. What is this alkene?
  A)
  1-butene            done clear
  B)
  2-butene done clear
  C)
  2-methyl propene done clear
  D)
  Both [b] and [c] done clear
  View Solution play_arrow

• question_answer6)
        The major product formed in the following reaction is
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer7)
   In the above reaction, product is
  A)
         done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer8)
  \[B\,\,\xleftarrow[Catalyst]{Lindlar's}R-C\equiv C-R\xrightarrow{Na/N{{H}_{3}}}A\] A and B are geometrical isomres \[\left( R-CH-=CH-R \right)-\]
  A)
  A is trans, B is cis done clear
  B)
  A and B both are cis done clear
  C)
  A and B both are trans done clear
  D)
  A is cis, B is trans done clear
  View Solution play_arrow

• question_answer9)
  An optically active alkyl bromide X (\[{{C}_{6}}{{H}_{13}}Br\]) upon treatment with ethanolic KOH solution forms two alkenes Y and Z with their molecular formula (\[{{C}_{6}}{{H}_{12}}\]). Y and Z are positional isomers. Z upon treatment with cold, dilute alkaline \[KMn{{O}_{4}}\] solution gives a meso-diol. Hence, X is
  A)
  2-bromohexane done clear
  B)
  1-bromo-2, 3-dimethyl butane done clear
  C)
  3-bromohexane done clear
  D)
  2-bromo-2, 3-dimethyl butane done clear
  View Solution play_arrow

• question_answer10)
  The major product of the following reaction is:
  A)
  done clear
  B)
  done clear
  C)
                   done clear
  D)
  done clear
  View Solution play_arrow

• question_answer11)
   \[{{R}_{1}}\]and \[{{R}_{2}}\] are
  A)
  Cold alkaline \[KMn{{O}_{4}},Os{{O}_{4}}/{{H}_{2}}{{O}_{2}}\] done clear
  B)
  Cold alkaline \[KMn{{O}_{4}},\]\[HC{{O}_{3}}H\] and \[{{H}_{3}}{{O}^{+}}\] done clear
  C)
  Cold alkaline \[KMn{{O}_{4}}.\]\[{{C}_{6}}{{H}_{5}}C{{O}_{3}}H\] done clear
  D)
  \[{{C}_{6}}{{H}_{5}}C{{O}_{3}}H,\,HC{{O}_{3}}H\] done clear
  View Solution play_arrow

• question_answer12)
  Which of the following compounds was the starting material for the oxidation shown below?
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer13)
  Arrange the following compounds in decreasing order of rate of electrophilic addition reaction.
  A)
  Q>S>P>R       done clear
  B)
  S>Q>R>P done clear
  C)
  P>Q>R>S       done clear
  D)
  R>Q>S>P done clear
  View Solution play_arrow

• question_answer14)
  
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  No reaction done clear
  View Solution play_arrow

• question_answer15)
   The end product (X) is
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer16)

  Identify the incorrect statement/statements:

  (i) Alkynes are more reactive than alkenes towards electrophilic addition reaction

  (ii) Alkynes are less reactive than alkenes towards electrophilic addition reaction

  (iii) Alkynes decolourise \[B{{r}_{2}}\] water

  (iv) Addition of HBr to alkynes in presence of peroxide proceeds via Markownikoff's rule

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

• question_answer17)
  Arrange in order of decreasing trend towards electrophilic substitution reactions: Chlorobenzene (I), benzene (II), toluene (III), anilinium chloride (IV)
  A)
  III > II > I > IV done clear
  B)
  IV > I > II > III done clear
  C)
  II > I > IV > III done clear
  D)
  I > II > IV > III done clear
  View Solution play_arrow

• question_answer18)
   The product is:
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer19)
  The compound (S) is:
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer20)
  The compound 'p' is:
  A)
  done clear
  B)
    done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer21)
  Find out the number of dimerized products obtained by following reaction. \[{{H}_{3}}C-Cl+{{H}_{3}}C-C{{H}_{2}}-Cl+\] \[{{H}_{3}}C-C{{H}_{2}}-C{{H}_{2}}-Cl\xrightarrow[Dry\,ether]{Na}\]
  View Solution play_arrow

• question_answer22)
  If 2-chloro-3-Methyl pentane is treated with ethanolic KOH solution, how many different alkenes would be formed via \[{{E}_{2}}\] elimination reaction?
  View Solution play_arrow

• question_answer23)
  How many of the following on reductive ozonolysis will give only glyoxal? Ethylene, acetylene, 1, 3-butadiene, benzene, o-xylene, m-xylene, p-xylene, cyclobutadiene, cyclooctatetraene.
  View Solution play_arrow

• question_answer24)
  Identity number of reactions that can give benzene as major product.

  (a) \[3H-C-H\xrightarrow[\Delta ]{Fe\,or\,CO}\]	(b)
  (c)	(d)
  (e)	(f)
  (g)	(h)
  (i)

   
  View Solution play_arrow

• question_answer25)
  Each of the compounds shown below the two aromatic ring, labelled as A and B, identify number of compounds in which ring B is more active than ring A for electrophilic aromatic substitution reaction.
  View Solution play_arrow