JEE Main & Advanced Chemistry Hydrocarbons / हाइड्रोकार्बन Question Bank

done Alkane Total Questions - 175

• question_answer1)
  Which represents an alkane                                [CPMT 1976]
  A)
  \[{{C}_{5}}{{H}_{8}}\] done clear
  B)
  \[{{C}_{8}}{{H}_{6}}\] done clear
  C)
  \[{{C}_{9}}{{H}_{10}}\] done clear
  D)
  \[{{C}_{7}}{{H}_{16}}\] done clear
  View Solution play_arrow

• question_answer2)
  The decreasing order of boiling points is [BHU 1999]
  A)
  N-Pentane > iso-Pentane > neo-Pentane done clear
  B)
  iso-Pentane > n-Pentane > neo-Pentane done clear
  C)
  neo-Pentane > iso-Pentane > n-Pentane done clear
  D)
  n-Pentane > neo-Pentane > iso-Pentane done clear
  View Solution play_arrow

• question_answer3)
  To prepare a pure sample of n-hexane using sodium metal as one reactant, the other reactant will be [BHU 1999]
  A)
  n-propyl bromide done clear
  B)
  Ethyl bromide and n-butyl bromide done clear
  C)
  Ethyl chloride and n-butyl chloride done clear
  D)
  Methyl bromide and n -pentyl chloride done clear
  View Solution play_arrow

• question_answer4)
  In the preparation of Grignard reagent from haloalkane, the metal [RPET 1999]
  A)
  Mg done clear
  B)
  Zn done clear
  C)
  Li done clear
  D)
  K done clear
  View Solution play_arrow

• question_answer5)
  Sodium acetate can be converted to ethane by [Pune CET 1998]
  A)
  Heating with \[LiAl{{H}_{4}}\] done clear
  B)
  Electrolysing its aqueous solution done clear
  C)
  Heating with sodalime done clear
  D)
  Heating with calcium acetate done clear
  View Solution play_arrow

• question_answer6)
  Which of the following compounds is used in antiknock compositions to prevent the deposition of oxides of lead on spark plug, combustion chamber and exhaust pipe [KCET 1998]
  A)
  Glycerol done clear
  B)
  Glycol done clear
  C)
  1, 2-dibromoethane done clear
  D)
  Benzene done clear
  View Solution play_arrow

• question_answer7)
  Which of petroleum corresponds to kerosene oil [DCE 1999]
  A)
  \[{{C}_{15}}-{{C}_{18}}\] done clear
  B)
  \[{{C}_{10}}-{{C}_{12}}\] done clear
  C)
  \[{{C}_{5}}-{{C}_{9}}\] done clear
  D)
  \[{{C}_{1}}-{{C}_{9}}\] done clear
  View Solution play_arrow

• question_answer8)
  In the reaction \[C{{H}_{3}}-Br+2Na+Br-C{{H}_{3}}\to \], the product called [Pb. CET 1999; CPMT 1983. 86; KCET 1992; MP PMT 1994; BHU 1998; MP PMT 2002; MP PET 1986]
  A)
  Wurtz reaction done clear
  B)
  Aldol condensation done clear
  C)
  Perkin's reaction done clear
  D)
  Levit reaction done clear
  View Solution play_arrow

• question_answer9)
  Iodoethane reacts with sodium in the presence of dry ether. The product is [AFMC 1997; KCET 1998]
  A)
  Pentane done clear
  B)
  Propane done clear
  C)
  Butene done clear
  D)
  Butane done clear
  View Solution play_arrow

• question_answer10)
  Which of the following is oxidised by \[KMn{{O}_{4}}\]
  A)
  Methane done clear
  B)
  Pentane done clear
  C)
  Isobutane done clear
  D)
  Neopentane done clear
  View Solution play_arrow

• question_answer11)
  Which of the following has maximum stability [AIIMS 2001]
  A)
  \[\overset{+}{\mathop{C}}\,{{H}_{3}}\] done clear
  B)
  \[C{{H}_{3}}-\overset{H}{\mathop{\overset{|}{\mathop{\underset{+}{\mathop{C}}\,}}\,}}\,-H\] done clear
  C)
  \[C{{H}_{3}}-\overset{H}{\mathop{\overset{|}{\mathop{\underset{+}{\mathop{C}}\,}}\,}}\,-C{{H}_{3}}\] done clear
  D)
  \[C{{H}_{3}}-\overset{C{{H}_{3}}}{\mathop{\overset{|\,\,\,\,\,\,\,\,\,\,}{\mathop{\underset{+}{\mathop{C}}\,\,\,\,-\,\,\,}}\,}}\,C{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer12)
  The most volatile compound is [DPMT 2000]
  A)
  2, 2-dimethyl propane done clear
  B)
  2-methyl butane done clear
  C)
  Isobutane done clear
  D)
  n-pentane done clear
  View Solution play_arrow

• question_answer13)
  In Wurtz reaction, the reagent used is [EAMCET 1998]
  A)
  Na done clear
  B)
  \[{Na}/{\text{liquid }N{{H}_{3}}}\;\] done clear
  C)
  \[{Na}/{\text{dry ether}}\;\] done clear
  D)
  \[{Na}/{\text{dry alcohol}}\;\] done clear
  View Solution play_arrow

• question_answer14)
  Which of the following has highest octane number  [MP PMT 2000]
  A)
  n-hexane done clear
  B)
  n-heptane done clear
  C)
  n-pentane done clear
  D)
  2, 2, 4-trimethyl pentane done clear
  View Solution play_arrow

• question_answer15)
  What is freon-12 [RPET 1999]
  A)
  Pesticide done clear
  B)
  Refrigerant done clear
  C)
  Solvent done clear
  D)
  Lubricant done clear
  View Solution play_arrow

• question_answer16)
  The petrol having octane number 80 has [MP PET 2000]
  A)
  20% normal heptane + 80% iso-octane done clear
  B)
  80% normal heptane + 20% iso-octane done clear
  C)
  20% normal heptane + 80% normal octane done clear
  D)
  80% normal heptane + 20% normal octane done clear
  View Solution play_arrow

• question_answer17)
  Which of the following reactions will not give propane [DPMT 2005]
  A)
  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}Cl\underset{{{H}_{2}}O}{\mathop{\xrightarrow{Mg/\text{ether}}}}\,\] done clear
  B)
  \[C{{H}_{3}}COCl\underset{{{H}_{2}}O}{\mathop{\xrightarrow{C{{H}_{3}}MgX}}}\,\] done clear
  C)
  \[C{{H}_{3}}CH=C{{H}_{2}}\underset{C{{H}_{3}}COOH}{\mathop{\xrightarrow{{{B}_{2}}{{H}_{6}}}}}\,\] done clear
  D)
  \[\underset{OH\,\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{C{{H}_{3}}CH-C{{H}_{3}}}}\,}}\,\xrightarrow{P/HI}\] done clear
  View Solution play_arrow

• question_answer18)
  The shape of methane molecule is [MP PET 1997, 2001]
  A)
  Linear done clear
  B)
  Trigonal planar done clear
  C)
  Square planar done clear
  D)
  Tetrahedral done clear
  View Solution play_arrow

• question_answer19)
  Which of the following shows only one brominated compound [CPMT 1996]
  A)
  Butene-2 done clear
  B)
  2, 2-dimethylpropane done clear
  C)
  Butyne-1 done clear
  D)
  Butanol-3 done clear
  View Solution play_arrow

• question_answer20)
  Kerosene is used as fuel because it is [CPMT 1996]
  A)
  Less volatile done clear
  B)
  More volatile done clear
  C)
  Cheap done clear
  D)
  Abundantly available done clear
  View Solution play_arrow

• question_answer21)
  \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\underset{HBr}{\mathop{\xrightarrow{AlC{{l}_{3}}}}}\,\text{Product}\]. Product in above reaction is [RPMT 2003]
  A)
  \[C{{H}_{3}}-\underset{Br\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,}{\mathop{CH\,}}\,}}\,-C{{H}_{2}}-C{{H}_{3}}\] done clear
  B)
  \[C{{H}_{3}}-\underset{C{{H}_{3}}}{\mathop{\underset{|\,\,\,\,\,\,}{\mathop{CH}}\,}}\,-C{{H}_{3}}\] done clear
  C)
  \[\underset{Br\,\,\,\,}{\mathop{\underset{\,\,|\,\,\,\,\,\,\,\,\,\,}{\mathop{C{{H}_{2}}}}\,}}\,-C{{H}_{2}}-\underset{C{{H}_{3}}}{\mathop{\underset{|\,\,\,\,\,\,\,\,}{\mathop{C{{H}_{2}}}}\,}}\,\] done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer22)
  Which of the following statements is not true for ethane [AIIMS 1996]
  A)
  It can be chlorinated with chlorine done clear
  B)
  It can be catalytically hydrogenated done clear
  C)
  When oxidised produces \[C{{O}_{2}}\] and \[{{H}_{2}}O\] done clear
  D)
  It is a homologue of iso-butane done clear
  View Solution play_arrow

• question_answer23)
  Petroleum refining is [AIIMS 1996; KCET 2004]
  A)
  Distillation of petroleum to get different fractions done clear
  B)
  Obtaining aromatic compounds from aliphatic compounds present in petroleum done clear
  C)
  Cracking of petroleum to get gaseous hydrocarbons done clear
  D)
  Purification of petroleum done clear
  View Solution play_arrow

• question_answer24)
  The chemical added to leaded petrol to prevent the deposition of lead in the combustion chamber is     [Kerala (Med.) 2003]
  A)
  Iso-octane done clear
  B)
  Ethylene dibromide done clear
  C)
  Tetraethyl lead done clear
  D)
  Mercaptan done clear
  E)
  n-Heptane done clear
  View Solution play_arrow

• question_answer25)
  In the commercial gasolines, the type of hydrocarbons which are more desirable is [CBSE PMT 1997; AFMC 1997]
  A)
  Branched hydrocarbon done clear
  B)
  Straight-chain hydrocarbon done clear
  C)
  Linear unsaturated hydrocarbon done clear
  D)
  Toluene done clear
  View Solution play_arrow

• question_answer26)
  Which of the following is not formed by the reaction of \[C{{l}_{2}}\] on \[C{{H}_{4}}\] in sunlight [AIIMS 1987]
  A)
  \[CHC{{l}_{3}}\] done clear
  B)
  \[C{{H}_{3}}Cl\] done clear
  C)
  \[C{{H}_{3}}C{{H}_{3}}\] done clear
  D)
  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer27)
  Which of the following has the highest boiling point   [DPMT 1986]
  A)
  Neopentane done clear
  B)
  n-butane done clear
  C)
  n-heptane done clear
  D)
  Isobutane done clear
  View Solution play_arrow

• question_answer28)
  Which gives \[C{{H}_{4}}\] when treated with water [CPMT 1974, 79; NCERT 1976; IIT-JEE 1990]
  A)
  Silicon carbide done clear
  B)
  Calcium carbide done clear
  C)
  Aluminium carbide done clear
  D)
  Iron carbide done clear
  View Solution play_arrow

• question_answer29)
  Which of the following does not react with \[PC{{l}_{5}}\]   [CPMT 1973]
  A)
  \[C{{H}_{3}}OH\] done clear
  B)
  \[C{{H}_{3}}COOH\] done clear
  C)
  \[C{{H}_{3}}CHO\] done clear
  D)
  \[{{C}_{2}}{{H}_{6}}\] done clear
  View Solution play_arrow

• question_answer30)
  Which of the following compounds is insoluble even in hot concentrated \[{{H}_{2}}S{{O}_{4}}\] [IIT-JEE 1983]
  A)
  Ethylene done clear
  B)
  Benzene done clear
  C)
  Hexane done clear
  D)
  Aniline done clear
  View Solution play_arrow

• question_answer31)
  A reaction between methyl magnesium bromide and ethyl alcohol gives [CPMT 1979; MNR 1986; UPSEAT 1999]
  A)
  Methane done clear
  B)
  Ethane done clear
  C)
  Propane done clear
  D)
  Butane done clear
  View Solution play_arrow

• question_answer32)
  Methane and ethane both can be obtained in single step from [CPMT 1974; MP PET 1995; AFMC 1998, 2000; BHU 2005]
  A)
  \[C{{H}_{3}}I\] done clear
  B)
  \[{{C}_{2}}{{H}_{5}}I\] done clear
  C)
  \[C{{H}_{3}}OH\] done clear
  D)
  \[{{C}_{2}}{{H}_{5}}OH\] done clear
  View Solution play_arrow

• question_answer33)
  Paraffin wax is [MP PMT 1986; CPMT 1993]
  A)
  Ester done clear
  B)
  Alcohol done clear
  C)
  Unsaturated hydrocarbon done clear
  D)
  Saturated hydrocarbon done clear
  View Solution play_arrow

• question_answer34)
  The number of possible enantiomeric pairs that can be produced during monochlorination of 2-methylbutane is [IIT-JEE 1997]
  A)
  2 done clear
  B)
  3 done clear
  C)
  4 done clear
  D)
  1 done clear
  View Solution play_arrow

• question_answer35)
  Petroleum consists mainly of [CPMT 1985, 94; KCET 1991]
  A)
  Aliphatic hydrocarbons done clear
  B)
  Aromatic hydrocarbons done clear
  C)
  Aliphatic alcohols done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer36)
  Petroleum ether can be used as
  A)
  Solvent for fat, oil, varnish and rubber done clear
  B)
  As a fuel done clear
  C)
  Both A and B done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer37)
  Which of the following are produced from coaltar [MNR 1987; UPSEAT 2002]
  A)
  Synthetic dyes done clear
  B)
  Drugs done clear
  C)
  Perfumes done clear
  D)
  All the three done clear
  View Solution play_arrow

• question_answer38)
  In alkanes, the bond angle is [MP PMT 1989; BHU 1996]
  A)
  \[{{109.5}^{o}}\] done clear
  B)
  \[{{109}^{o}}\] done clear
  C)
  \[{{120}^{o}}\] done clear
  D)
  \[{{180}^{o}}\] done clear
  View Solution play_arrow

• question_answer39)
  In the preparation of alkanes; a concentrated aqueous solution of sodium or potassium salts of saturated carboxylic acid are subjected to [CPMT 1985; MP PET 1999]
  A)
  Hydrolysis done clear
  B)
  Oxidation done clear
  C)
  Hydrogenation done clear
  D)
  Electrolysis done clear
  View Solution play_arrow

• question_answer40)
  Halogenation of alkanes is an example of [MP PET 1993; KCET 1998]
  A)
  Electrophilic substitution done clear
  B)
  Nucleophilic substitution done clear
  C)
  Free-radical substitution done clear
  D)
  Oxidation done clear
  View Solution play_arrow

• question_answer41)
  Propionic acid is subjected to reduction with hydroiodic acid in the presence of a little P, the product formed is [JIPMER 1997]
  A)
  Ethane done clear
  B)
  Propane done clear
  C)
  Butane done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer42)
  When ethyl iodide and propyl iodide react with Na in the presence of ether, they form [BHU 1997]
  A)
  One alkane done clear
  B)
  Two alkanes done clear
  C)
  Four alkanes done clear
  D)
  Three alkanes done clear
  View Solution play_arrow

• question_answer43)
  The alkane that yields two isomeric monobromo derivatives is [EAMCET 1997]
  A)
  Neopentane done clear
  B)
  Ethane done clear
  C)
  Methane done clear
  D)
  Propane done clear
  View Solution play_arrow

• question_answer44)
  Kerosene is a mixture of [CPMT 1979; AFMC 1992]
  A)
  Alkanes done clear
  B)
  Aromatic compounds done clear
  C)
  Alcohols done clear
  D)
  Aliphatic acids done clear
  View Solution play_arrow

• question_answer45)
  When petroleum is heated the vapours contain mainly [CPMT 1981]
  A)
  Kerosene done clear
  B)
  Petroleum ether done clear
  C)
  Diesel done clear
  D)
  Machine oil done clear
  View Solution play_arrow

• question_answer46)
  Iso-octane is mixed to the petrol [NCERT 1972]
  A)
  To precipitate inorganic substances done clear
  B)
  To prevent freezing of petrol done clear
  C)
  To increase boiling point of petrol done clear
  D)
  As an antiknock done clear
  View Solution play_arrow

• question_answer47)
  Tetraethyl lead is used as [NCERT 1976, 79; DPMT 1984; CPMT 1989, 91; BHU 1995]
  A)
  Fire extinguisher done clear
  B)
  Pain reliever done clear
  C)
  Petroleum additive done clear
  D)
  Mosquito repellent done clear
  View Solution play_arrow

• question_answer48)
  Cyclohexane, a hydrocarbon floats on water because [NCERT 1976]
  A)
  It is immiscible with water done clear
  B)
  Its density is low as compared to water done clear
  C)
  It is non-polar substance done clear
  D)
  It is immiscible and lighter than water done clear
  View Solution play_arrow

• question_answer49)
  Natural gas contains mainly [MNR 1990; UPSEAT 1999, 2000, 01, 02; BCECE 2005]
  A)
  Methane done clear
  B)
  n-butane done clear
  C)
  n-octane done clear
  D)
  Mixture of octane done clear
  View Solution play_arrow

• question_answer50)
  Which compound is not inflammable [MP PET 2001]
  A)
  \[CC{{l}_{4}}\] done clear
  B)
  \[{{C}_{2}}{{H}_{5}}OH\] done clear
  C)
  \[C{{H}_{4}}\] done clear
  D)
  \[{{C}_{6}}{{H}_{6}}\] done clear
  View Solution play_arrow

• question_answer51)
  Propane is obtained from propene, by which of the following methods [CBSE PMT 2001; AFMC 2001]
  A)
  Wurtz reaction done clear
  B)
  Dehydrogenation done clear
  C)
  Frankland reaction done clear
  D)
  Catalytic hydrogenation done clear
  View Solution play_arrow

• question_answer52)
  The organic compound used as antiknock agent in petroleum is [DCE 1999; CPMT 2000; Pb. CET 2000;  MP PET 2001]
  A)
  \[{{({{C}_{2}}{{H}_{5}})}_{4}}Pb\] done clear
  B)
  TNT done clear
  C)
  \[C{{H}_{3}}MgBr\] done clear
  D)
  \[{{({{C}_{2}}{{H}_{5}})}_{2}}Hg\] done clear
  View Solution play_arrow

• question_answer53)
  In catalytic reduction of hydrocarbons which catalyst is mostly used [DCE 2001]
  A)
  Pt /Ni done clear
  B)
  Pd done clear
  C)
  \[Si{{O}_{2}}\] done clear
  D)
  Misch Metal done clear
  View Solution play_arrow

• question_answer54)
  Ethylene reacts with bromine to form [MP PET 2001]
  A)
  \[Br-C{{H}_{2}}-C{{H}_{3}}\] done clear
  B)
  \[C{{H}_{3}}-CB{{r}_{3}}\] done clear
  C)
  \[Br-C{{H}_{2}}-C{{H}_{2}}Br\] done clear
  D)
  \[CHB{{r}_{3}}\] done clear
  View Solution play_arrow

• question_answer55)
  Gasoline is obtained from crude petroleum oil by its [MP PMT 1999]
  A)
  Fractional distillation done clear
  B)
  Vacuum distillation done clear
  C)
  Steam distillation done clear
  D)
  Pyrolysis done clear
  View Solution play_arrow

• question_answer56)
  Which of the following does not give alkane [MP PMT 1999]
  A)
  Reaction of \[C{{H}_{3}}I\] with Na in ether done clear
  B)
  Reaction of sodium acetate with sodalime done clear
  C)
  Electrolysis of concentrated sodium acetate solution done clear
  D)
  Reaction of ethyl chloride with alco. KOH done clear
  View Solution play_arrow

• question_answer57)
  LPG is a mixture of [MP PMT 1999; KCET 2005]
  A)
  \[{{C}_{6}}{{H}_{12}}+{{C}_{6}}{{H}_{6}}\] done clear
  B)
  \[{{C}_{4}}{{H}_{10}}+{{C}_{3}}{{H}_{8}}\] done clear
  C)
  \[{{C}_{2}}{{H}_{4}}+{{C}_{2}}{{H}_{2}}\] done clear
  D)
  \[{{C}_{2}}{{H}_{4}}+C{{H}_{4}}\] done clear
  View Solution play_arrow

• question_answer58)
  Carbon black, which is used in making printer's ink, is obtained by decomposition of [MP PET 1993]
  A)
  Acetylene done clear
  B)
  Benzene done clear
  C)
  Carbon tetrachloride done clear
  D)
  Methane done clear
  View Solution play_arrow

• question_answer59)
  The addition of tetraethyl lead to petrol [MP PET 1993]
  A)
  Lowers its octane number done clear
  B)
  Raises its octane number done clear
  C)
  May raise or lower the octane number done clear
  D)
  Has no effect on octane number done clear
  View Solution play_arrow

• question_answer60)
  Which of the following compound has maximum boiling point [IIT-JEE 1982; MP PMT 1986; MADT Bihar 1995; Pb. PMT 1999]
  A)
  n-hexane done clear
  B)
  n-pentane done clear
  C)
  2, 2-dimethyl propane done clear
  D)
  2-methyl butane done clear
  View Solution play_arrow

• question_answer61)
  Knocking sound occurs in engine when fuel [CPMT 1981]
  A)
  Ignites slowly done clear
  B)
  Ignites rapidly done clear
  C)
  Contains water done clear
  D)
  Is mixed with machine oil done clear
  View Solution play_arrow

• question_answer62)
  Petroleum is mainly a mixture of [CPMT 1984; Pb. PMT 1999]
  A)
  Alkanes done clear
  B)
  Cyclohexane done clear
  C)
  Benzenoid hydrocarbons done clear
  D)
  Alkenes done clear
  View Solution play_arrow

• question_answer63)
  Which of the following has maximum boiling point [IIT-JEE 1986; MP PMT 1986; CPMT 1989]
  A)
  iso-octane done clear
  B)
  n-octane done clear
  C)
  2, 2, 3, 3-tetramethyl butane done clear
  D)
  n-butane done clear
  View Solution play_arrow

• question_answer64)
  Aqueous solution of the following compound on electrolysis gives ethane [NCERT 1983; MP PET 1985; CPMT 1975, 79]
  A)
  Acetic acid done clear
  B)
  Acetamide done clear
  C)
  Potassium acetate done clear
  D)
  Ethyl acetate done clear
  View Solution play_arrow

• question_answer65)
  Which of the following does not decolourise bromine solution in carbon disulphide [MP PET 1986]
  A)
  Acetylene done clear
  B)
  Propene done clear
  C)
  Ethane done clear
  D)
  Propyne done clear
  View Solution play_arrow

• question_answer66)
  Anhydrous sodium acetate on heating with sodalime gives [CPMT 1972, 84; Pb. CET 2001, 2003]
  A)
  Acetic acid done clear
  B)
  Methane done clear
  C)
  Calcium acetate done clear
  D)
  Ethane done clear
  View Solution play_arrow

• question_answer67)
  Water gas is [CPMT 1993, 2004; Pb. PMT 2004]
  A)
  \[CO+C{{O}_{2}}\] done clear
  B)
  \[CO+{{N}_{2}}\] done clear
  C)
  \[CO+{{H}_{2}}\] done clear
  D)
  \[CO+{{N}_{2}}+{{H}_{2}}\] done clear
  View Solution play_arrow

• question_answer68)
  A sample of gasoline contains 81% iso-octane and 19% n-heptane. Its octane number will be [MP PMT 1995]
  A)
  19 done clear
  B)
  81 done clear
  C)
  100 done clear
  D)
  62 done clear
  View Solution play_arrow

• question_answer69)
  The natural petroleum contains [MP PMT 1995]
  A)
  Saturated hydrocarbons done clear
  B)
  Cyclic saturated hydrocarbons done clear
  C)
  Compounds of sulphur done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer70)
  The preparation of ethane by electrolysis of aqueous solution of potassium acetate is called as [MP PMT 1995]
  A)
  Wurtz reaction done clear
  B)
  Sabatier-Senderen's reaction done clear
  C)
  Kolbe's synthesis done clear
  D)
  Grignard reaction done clear
  View Solution play_arrow

• question_answer71)
  Action of hydrogen chloride on \[\underset{\,\,\,\,\,C{{H}_{3}}}{\mathop{\underset{|}{\mathop{C{{H}_{3}}-C=C{{H}_{2}}}}\,}}\,\] and on \[CH\equiv CH\] will predominantly give the compounds, respectively
  A)
  \[\underset{C{{H}_{3}}\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{C{{H}_{3}}-CH=C{{H}_{2}}Cl}}\,}}\,\] and \[C{{H}_{2}}Cl-C{{H}_{2}}Cl\] done clear
  B)
  \[\underset{C{{H}_{3}}}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,}{\mathop{C{{H}_{3}}-CCl=C{{H}_{3}}}}\,}}\,\] and \[C{{H}_{3}}-CHC{{l}_{2}}\] done clear
  C)
  \[\underset{C{{H}_{3}}\,\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{C{{H}_{3}}-CH=C{{H}_{2}}Cl}}\,}}\,\] and \[C{{H}_{3}}-CHC{{l}_{2}}\] done clear
  D)
  \[\underset{C{{H}_{3}}}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,}{\mathop{C{{H}_{3}}-CH=C{{H}_{3}}}}\,}}\,\] and \[C{{H}_{2}}Cl-C{{H}_{2}}Cl\] done clear
  View Solution play_arrow

• question_answer72)
  As the number of carbon atoms in a chain increases the boiling point of alkanes [AFMC 1989]
  A)
  Increases done clear
  B)
  Decreases done clear
  C)
  Remains same done clear
  D)
  May increase or decrease done clear
  View Solution play_arrow

• question_answer73)
  In the fractional distillation of crude petroleum [Roorkee 1989]
  A)
  Petrol condenses at the bottom of the column done clear
  B)
  The gases condense at the top of the column done clear
  C)
  High boiling constituents condense at the bottom of the column done clear
  D)
  High boiling constituents condense at the top of the column done clear
  View Solution play_arrow

• question_answer74)
  Which of the following is not an endothermic reaction [J & K 2005]
  A)
  Dehydrogenation done clear
  B)
  Ethane to ethene done clear
  C)
  Combustion of propane done clear
  D)
  Change of chlorine molecule into chlorine atoms. done clear
  View Solution play_arrow

• question_answer75)
  Gasoline is the name of [Roorkee 1989]
  A)
  Crude oil done clear
  B)
  The gaseous constituents of petroleum done clear
  C)
  The mixture of uncondensed gases produced in the distillation of crude oil done clear
  D)
  The mixture of the residue and gas oil obtained in the distillation of crude oil done clear
  View Solution play_arrow

• question_answer76)
  In the process of cracking [Roorkee 1989]
  A)
  Organic compounds decompose into their constituent elements done clear
  B)
  Hydrocarbons decompose into carbon and hydrogen done clear
  C)
  High molecular weight organic compounds decompose to give low molecular weight organic compounds done clear
  D)
  Hydrocarbons yield alkyl radicals and hydrogen done clear
  View Solution play_arrow

• question_answer77)
  Octane number has 0 value for [Roorkee 1989; MP PET 1999, 2002; MP PMT 2001; KCET 2002]
  A)
  iso-octane done clear
  B)
  n-hexane done clear
  C)
  n-heptane done clear
  D)
  iso-heptane done clear
  View Solution play_arrow

• question_answer78)
  Dry distillation of sodium propanoate with sodalime gives [CPMT 1996]
  A)
  Propane done clear
  B)
  Propene done clear
  C)
  Ethane done clear
  D)
  Ethene done clear
  View Solution play_arrow

• question_answer79)
  What is the chief product obtained when n-butane is treated with bromine in the presence of light at \[{{130}^{o}}C\] [IIT-JEE 1995]
  A)
  \[\underset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3}}}{\mathop{\underset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|}{\mathop{C{{H}_{3}}-C{{H}_{2}}-CH-Br}}\,}}\,\] done clear
  B)
  \[\underset{C{{H}_{3}}\,\,\,\,\,\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{C{{H}_{3}}-CH-C{{H}_{2}}-Br}}\,}}\,\] done clear
  C)
  \[\underset{\,\,\,\,\,\,\,\,\,C{{H}_{3}}}{\mathop{\underset{\,\,\,\,|}{\mathop{\overset{\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3}}}{\mathop{\overset{\,\,\,\,\,\,|}{\mathop{C{{H}_{3}}-C-Br}}\,}}\,}}\,}}\,\] done clear
  D)
  \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-Br\] done clear
  View Solution play_arrow

• question_answer80)
  A mixture of propene and methane is obtained by the cracking of
  A)
  1-butene done clear
  B)
  2-butene done clear
  C)
  n-butane done clear
  D)
  Isobutane done clear
  View Solution play_arrow

• question_answer81)
  Which of the following fractions of petroleum refining contains kerosene ? (Boiling ranges in \[^{o}C\] are given below)
  A)
  40 - 80 done clear
  B)
  80 - 200 done clear
  C)
  200 - 300 done clear
  D)
  Above 300 done clear
  View Solution play_arrow

• question_answer82)
  Which of the following statements is incorrect ? The members of the homologous series of alkanes [NCERT 1974]
  A)
  Are all straight chain compounds done clear
  B)
  Have the general formula \[{{C}_{n}}{{H}_{2n+2}}\] done clear
  C)
  Have similar chemical properties done clear
  D)
  Show a regular gradation of physical properties done clear
  View Solution play_arrow

• question_answer83)
  On mixing tetraethyl lead to gasoline available at petrol pumps [CPMT 1981]
  A)
  Calorific value of the fuel increases done clear
  B)
  Odour diminishes done clear
  C)
  Less smoke is obtained on combustion done clear
  D)
  Antiknock property of fuel increases done clear
  View Solution play_arrow

• question_answer84)
  A liquid hydrocarbon can be converted to gaseous hydrocarbon by [CPMT 1980; MP PMT 2001]
  A)
  Cracking done clear
  B)
  Hydrolysis done clear
  C)
  Oxidation done clear
  D)
  Distillation under reduced pressure done clear
  View Solution play_arrow

• question_answer85)
  The tetrahedral nature of carbon was first given by [MP PMT 1994]
  A)
  Kekule done clear
  B)
  Le Bell and Van't Hoff done clear
  C)
  Pauling done clear
  D)
  Armstrong and Bayer done clear
  View Solution play_arrow

• question_answer86)
  Formation of alkane by the action of Zn on alkyl halide is called [DPMT 1984; MHCET 2004]
  A)
  Frankland's reaction done clear
  B)
  Wurtz reaction done clear
  C)
  Cannizzaro reaction done clear
  D)
  Kolbe's reaction done clear
  View Solution play_arrow

• question_answer87)
  Which of the following compounds will form a hydrocarbon on reaction with Grignard reagent [CPMT 1988, 93]
  A)
  \[C{{H}_{3}}C{{H}_{2}}OH\] done clear
  B)
  \[C{{H}_{3}}CHO\] done clear
  C)
  \[C{{H}_{3}}COC{{H}_{3}}\] done clear
  D)
  \[C{{H}_{3}}C{{O}_{2}}C{{H}_{2}}\] done clear
  View Solution play_arrow

• question_answer88)
  Name the hydrocarbon that is a liquid at STP
  A)
  Ethane done clear
  B)
  Propane done clear
  C)
  n-butane done clear
  D)
  n-pentane done clear
  View Solution play_arrow

• question_answer89)
  Which statement is not true concerning alkanes [MP PET 2003]
  A)
  Large number alkanes are soluble in water done clear
  B)
  All alkanes have a lower density than water done clear
  C)
  At room temperature some alkanes are liquids, some solids and some gases done clear
  D)
  All alkanes burn done clear
  View Solution play_arrow

• question_answer90)
  Fischer Tropsch process is used for the manufacture of [DCE 1999; MP PET 2003]
  A)
  Synthetic petrol done clear
  B)
  Thermosetting plastics done clear
  C)
  Ethanol done clear
  D)
  Benzene done clear
  View Solution play_arrow

• question_answer91)
  Which one of the following compounds cannot be prepared by Wurtz reaction [Kurukshetra CEE 2002;  MP PMT 2002; MP PET 2003]
  A)
  \[C{{H}_{4}}\] done clear
  B)
  \[{{C}_{2}}{{H}_{6}}\] done clear
  C)
  \[{{C}_{3}}{{H}_{8}}\] done clear
  D)
  \[{{C}_{4}}{{H}_{10}}\] done clear
  View Solution play_arrow

• question_answer92)
  A fuel contains 25 % n-heptane and 75 % iso-octane. Its octane number is [MP PMT 1993; MP PET 1994]
  A)
  50 done clear
  B)
  75 done clear
  C)
  100 done clear
  D)
  25 done clear
  View Solution play_arrow

• question_answer93)
  Sodium ethoxide is a specific reagent for [CPMT 1985]
  A)
  Dehydration done clear
  B)
  Dehydrogenation done clear
  C)
  Dehydrohalogenation done clear
  D)
  Dehalogenation done clear
  View Solution play_arrow

• question_answer94)
  Which of the following has highest percentage of hydrogen [CPMT 1975; 79]
  A)
  \[C{{H}_{4}}\] done clear
  B)
  \[{{C}_{2}}{{H}_{4}}\] done clear
  C)
  \[{{C}_{6}}{{H}_{6}}\] done clear
  D)
  \[{{C}_{2}}{{H}_{2}}\] done clear
  View Solution play_arrow

• question_answer95)
  What is the molecular formula of the alkane, the 5.6 litre of which weight 11 g at STP [MP PMT 2003]
  A)
  \[{{C}_{6}}{{H}_{14}}\] done clear
  B)
  \[{{C}_{4}}{{H}_{10}}\] done clear
  C)
  \[{{C}_{3}}{{H}_{8}}\] done clear
  D)
  \[{{C}_{2}}{{H}_{6}}\] done clear
  View Solution play_arrow

• question_answer96)
  The reference compound `iso-octane' which is used in determining the octane number of gasoline has the structure
  A)
  \[C{{H}_{3}}-CH(C{{H}_{3}})-CH(C{{H}_{3}})-CH(C{{H}_{3}})-C{{H}_{3}}\] done clear
  B)
  \[C{{H}_{3}}-C{{(C{{H}_{3}})}_{2}}-C{{H}_{2}}-CH(C{{H}_{3}})-C{{H}_{3}}\] done clear
  C)
  \[C{{H}_{3}}-C{{(C{{H}_{3}})}_{2}}-CH(C{{H}_{3}})-C{{H}_{2}}-C{{H}_{3}}\] done clear
  D)
  \[C{{H}_{3}}-C{{(C{{H}_{3}})}_{2}}-C{{(C{{H}_{3}})}_{2}}-C{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer97)
  Sample of 2, 3-dibromo-3-methylpentane is heated with zinc dust. The resulting product is isolated and heated with HI in the presence of phosphorus. Indicate which is the structure that represent the final organic product formed in the reaction [CBSE PMT 1991]
  A)
  \[\underset{C{{H}_{3}}}{\mathop{\underset{|\,\,\,\,\,\,\,}{\mathop{C{{H}_{3}}-C{{H}_{2}}-CH-C{{H}_{2}}-C{{H}_{3}}}}\,}}\,\] done clear
  B)
  \[\overset{\,\,C{{H}_{3}}}{\mathop{\overset{|\,\,\,\,\,\,\,}{\mathop{C{{H}_{2}}=CH-CH-C{{H}_{2}}-C{{H}_{3}}}}\,}}\,\] done clear
  C)
  \[\underset{C{{H}_{3}}}{\mathop{\underset{|\,\,\,\,\,\,\,}{\mathop{C{{H}_{3}}-CHI-CH-C{{H}_{2}}-C{{H}_{3}}}}\,}}\,\] done clear
  D)
  \[\underset{C{{H}_{3}}}{\mathop{\underset{|\,\,\,\,\,\,\,}{\mathop{C{{H}_{2}}=CH-C(I)-C{{H}_{2}}-C{{H}_{3}}}}\,}}\,\] done clear
  View Solution play_arrow

• question_answer98)
  The order of appearance of the following with rising temperature during the refining of crude oil is  [MNR 1993; UPSEAT 2002]
  A)
  Kerosene oil, gasoline, diesel done clear
  B)
  Diesel, gasoline, kerosene oil done clear
  C)
  Gasoline, diesel, kerosene oil done clear
  D)
  Gasoline, kerosene oil, diesel done clear
  View Solution play_arrow

• question_answer99)
  When sodium propionate is heated with soda lime, the main product is [AMU 2002]
  A)
  Ethane done clear
  B)
  Methane done clear
  C)
  Propane done clear
  D)
  Butane done clear
  View Solution play_arrow

• question_answer100)
  Gasoline is a mixture of alkanes with the number of carbon atoms [CPMT 1983, 84; BVP 2003]
  A)
  \[{{C}_{3}}-{{C}_{5}}\] done clear
  B)
  \[{{C}_{5}}-{{C}_{6}}\] done clear
  C)
  \[{{C}_{6}}-{{C}_{8}}\] done clear
  D)
  \[{{C}_{7}}-{{C}_{9}}\] done clear
  View Solution play_arrow

• question_answer101)
  The final product of complete oxidation of hydrocarbons is [CPMT 1981]
  A)
  Acid done clear
  B)
  Aldehyde done clear
  C)
  \[{{H}_{2}}O+C{{O}_{2}}\] done clear
  D)
  Dihydric alcohol done clear
  View Solution play_arrow

• question_answer102)
  Which of the following will have least hindered rotation about carbon-carbon bond [IIT-JEE 1987; CPMT 1989, 94]
  A)
  Ethane done clear
  B)
  Ethylene done clear
  C)
  Acetylene done clear
  D)
  Hexachloroethane done clear
  View Solution play_arrow

• question_answer103)
  Which of the following represents the most oxidized form of hydrocarbon [MP PMT/PET 1988]
  A)
  \[C{{O}_{2}}\] done clear
  B)
  \[RCHO\] done clear
  C)
  \[RCOOH\] done clear
  D)
  RCOOOH done clear
  View Solution play_arrow

• question_answer104)
  Name the reaction \[{{C}_{10}}{{H}_{22}}\xrightarrow{900K}{{C}_{4}}{{H}_{8}}+{{C}_{6}}{{H}_{14}}\] [MP PET 1995; MP PMT 1997]
  A)
  Alkylation done clear
  B)
  Cracking done clear
  C)
  Pyrolysis done clear
  D)
  Fractionation done clear
  View Solution play_arrow

• question_answer105)
  How many types of carbon atoms are present in 2, 2, 3-trimethylpentane
  A)
  One done clear
  B)
  Two done clear
  C)
  Three done clear
  D)
  Four done clear
  View Solution play_arrow

• question_answer106)
  Which one gives only one monosubstitution product on chlorination [AIEEE 2003]
  A)
  n-pentane done clear
  B)
  Neopentane done clear
  C)
  Isopentane done clear
  D)
  n-butane done clear
  View Solution play_arrow

• question_answer107)
  \[C{{H}_{4}}\] is formed when [AFMC 1987]
  A)
  Sodium acetate is heated with sodalime done clear
  B)
  Iodomethane is reduced done clear
  C)
  Aluminium carbide reacts with water done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer108)
  A mixture of methane, ethylene and acetylene gases is passed through a Wolf's bottle containing ammoniacal cuprous chloride. The gas coming out is [NCERT 1976]
  A)
  Methane done clear
  B)
  Acetylene done clear
  C)
  A mixture of methane and ethylene done clear
  D)
  The original mixture done clear
  View Solution play_arrow

• question_answer109)
  At room temperature solid paraffin is [RPET/PMT 1999]
  A)
  \[{{C}_{3}}{{H}_{8}}\] done clear
  B)
  \[{{C}_{8}}{{H}_{18}}\] done clear
  C)
  \[{{C}_{4}}{{H}_{10}}\] done clear
  D)
  \[{{C}_{20}}{{H}_{42}}\] done clear
  View Solution play_arrow

• question_answer110)
  Which one of the following compounds does not give addition reactions [MADT Bihar 1981]
  A)
  Aldehydes done clear
  B)
  Alkanes done clear
  C)
  Alkenes done clear
  D)
  Alkynes done clear
  E)
  Ketones done clear
  F)
  All of these done clear
  View Solution play_arrow

• question_answer111)
  The most important method of preparation of hydrocarbons of lower carbon number is [CBSE PMT 1989]
  A)
  Pyrolysis of higher carbon number hydrocarbons done clear
  B)
  Electrolysis of salts of fatty acids done clear
  C)
  Sabatier and Senderen's reaction done clear
  D)
  Direct synthesis done clear
  View Solution play_arrow

• question_answer112)
  The inorganic origin of petroleum is indicated by the fact that [Roorkee 1990]
  A)
  Its constituents can be separated by fractional distillation done clear
  B)
  Carbon and hydrocarbon can combine by absorption of solar energy to give hydrocarbons done clear
  C)
  Petroleum contains traces of chlorophyll done clear
  D)
  Oil fields are located with the help of seismograph done clear
  View Solution play_arrow

• question_answer113)
  Which of the following is a gemdihalide [CPMT 1976, 88]
  A)
  \[C{{H}_{3}}.CHBr.CHBr.C{{H}_{3}}\] done clear
  B)
  \[C{{H}_{2}}Br.C{{H}_{2}}Br\] done clear
  C)
  \[CHBr=CHBr\] done clear
  D)
  \[C{{H}_{3}}CHB{{r}_{2}}\] done clear
  View Solution play_arrow

• question_answer114)
  Which one of the following contain isopropyl group [BHU 2005]
  A)
  2,2,3,3-tetramethylpentane done clear
  B)
  2-methylpentane done clear
  C)
  2,2,3-trimethylpentane done clear
  D)
  3,3-dimethylpentane done clear
  View Solution play_arrow

• question_answer115)
  Natural gas is a mixture of [MP PMT 1986]
  A)
  \[CO+C{{O}_{2}}\] done clear
  B)
  \[CO+{{N}_{2}}\] done clear
  C)
  \[CO+{{H}_{2}}+C{{H}_{4}}\] done clear
  D)
  \[C{{H}_{4}}+{{C}_{2}}{{H}_{6}}+{{C}_{3}}{{H}_{8}}\] done clear
  View Solution play_arrow

• question_answer116)
  By Wurtz reaction, a mixture of methyliodide and ethyliodide gives [BHU 2003]
  A)
  Butane done clear
  B)
  Ethane done clear
  C)
  Propane done clear
  D)
  A mixture of the above three done clear
  View Solution play_arrow

• question_answer117)
  Product obtained by nitration of propane is [RPMT 2003]
  A)
  Nitropropane done clear
  B)
  Nitromethane done clear
  C)
  Nitroethane done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer118)
  Isomerism in saturated hydrocarbons is due to
  A)
  Change in the valence of carbon done clear
  B)
  Change in the ratio of elements in compounds done clear
  C)
  Formation of branches in the chain of C atoms done clear
  D)
  Formation of double bond done clear
  View Solution play_arrow

• question_answer119)
  Photochemical chlorination of alkane is initiated by a process of [DPMT 1985; NCERT 1978]
  A)
  Pyrolysis done clear
  B)
  Substitution done clear
  C)
  Homolysis done clear
  D)
  Peroxidation done clear
  View Solution play_arrow

• question_answer120)
  Which of the following is not linked with methane
  A)
  Marsh gas done clear
  B)
  Natural gas done clear
  C)
  Producer gas done clear
  D)
  Coal gas done clear
  View Solution play_arrow

• question_answer121)
  Which of the following has highest octane number [MP PET 1996]
  A)
  n-hexane done clear
  B)
  n-heptane done clear
  C)
  Iso-octane done clear
  D)
  n-heptane and iso-octane mixed in ratio 50 : 50 done clear
  View Solution play_arrow

• question_answer122)
  A mixture of ethyl iodide and n-propyl iodide is subjected to Wurtz reaction. The hydrocarbon that will not be formed is [IIT-JEE (Screening) 1990]
  A)
  n-butane done clear
  B)
  n-propane done clear
  C)
  n-pentane done clear
  D)
  n-hexane done clear
  View Solution play_arrow

• question_answer123)
  Most of the hydrocarbons from petroleum are obtained by [CPMT 1974, 80]
  A)
  Fractional distillation done clear
  B)
  Fractional crystallization done clear
  C)
  Vaporization done clear
  D)
  Polymerization done clear
  View Solution play_arrow

• question_answer124)
  Which is the best antiknock compound or Which one of the following substances is used as an antiknock compound [CPMT 1974, 81, 99, 2000;RPMT 2002; CBSE PMT 1996; KCET (Med.) 2000 MP PET 1985, 87, 97, 2001; MP PMT 1994, 96; AIIMS 2000]
  A)
  Lead tetrachloride done clear
  B)
  Lead acetate done clear
  C)
  Zinc ethyl done clear
  D)
  Tetraethyl lead (TEL) done clear
  View Solution play_arrow

• question_answer125)
  In the dichlorination reaction of propane, mixture of products are obtained. How many isomers, the mixture contains [Orissa JEE 2003]
  A)
  2 done clear
  B)
  3 done clear
  C)
  4 done clear
  D)
  5 done clear
  View Solution play_arrow

• question_answer126)
  Which of the following cycloalkane gives open chain compound, when reacts with bromine [Orissa JEE 2003]
  A)
  Cyclopropane done clear
  B)
  Cyclopentane done clear
  C)
  Cyclohexane done clear
  D)
  Cyclo-octane done clear
  View Solution play_arrow

• question_answer127)
  Grignard reagent is not prepared in aqueous medium but prepared; in ether medium because the reagent [KCET 2002]
  A)
  Reacts with water done clear
  B)
  Is insoluble in water done clear
  C)
  Is highly reactive in ether done clear
  D)
  Becomes inactive in water done clear
  View Solution play_arrow

• question_answer128)
  A sample of petrol is a mixture of 30% n-heptane and 70% iso-octane. The sample has octane number [MP PET 1985]
  A)
  30 done clear
  B)
  70 done clear
  C)
  15 done clear
  D)
  35 done clear
  View Solution play_arrow

• question_answer129)
  For the reduction of ketones to hydrocarbon, the appropriate agent is [DPMT 2002]
  A)
  \[HI\] done clear
  B)
  \[Zn-Hg/HCl\] done clear
  C)
  Red phosphorous done clear
  D)
  \[{{H}_{2}}S{{O}_{4}}\] done clear
  View Solution play_arrow

• question_answer130)
  Heating of alkanes with fuming sulphuric acid or oleum at high temperature, which forms sulphonic acid, is called [MH CET 1999]
  A)
  Nitration done clear
  B)
  Halogenation done clear
  C)
  Sulphonation done clear
  D)
  Oxidation done clear
  View Solution play_arrow

• question_answer131)
  Propane is obtained from propene by which method? [CPMT 1997; CBSE PMT 2001; AFMC 2001; MH CET 2001]
  A)
  Catalyst hydrogenation done clear
  B)
  Wurtz reaction done clear
  C)
  Dehydrogenation done clear
  D)
  Frankland reaction done clear
  View Solution play_arrow

• question_answer132)
  B.P. of branched chain alkanes as compared to straight chain alkanes are [MP PMT 1987; AIIMS 1999]
  A)
  Lower done clear
  B)
  Equal done clear
  C)
  Higher done clear
  D)
  Independent of the chain done clear
  View Solution play_arrow

• question_answer133)
  Daily use candles (paraffin wax) contain [CPMT 1996]
  A)
  Higher saturated hydrocarbon done clear
  B)
  Lower saturated hydrocarbon done clear
  C)
  Higher unsaturated hydrocarbon done clear
  D)
  Lower unsaturated hydrocarbon done clear
  View Solution play_arrow

• question_answer134)
  The reaction \[C{{H}_{4}}+C{{l}_{2}}\underset{{}}{\mathop{\xrightarrow{\text{uv light}}}}\,C{{H}_{3}}Cl+HCl\] is an example of        [CBSE PMT 1999, 2002]
  A)
  Addition reactions done clear
  B)
  Substitution reaction done clear
  C)
  Elimination reaction done clear
  D)
  Rearrangement reaction done clear
  View Solution play_arrow

• question_answer135)
  Normal butane convert into isobutane by [RPMT 2002]
  A)
  \[LiAl{{H}_{4}}\] done clear
  B)
  \[AlC{{l}_{3}}\] done clear
  C)
  \[NaB{{H}_{4}}\] done clear
  D)
  \[Zn/HCl\] done clear
  View Solution play_arrow

• question_answer136)
  Alcoholic solution of KOH is used for [CPMT 1982, 86; IIT-JEE 1990]
  A)
  Dehydration done clear
  B)
  Dehydrogenation done clear
  C)
  Dehydrohalogenation done clear
  D)
  Dehalogenation done clear
  View Solution play_arrow

• question_answer137)
  Aluminium carbide on reacting with water gives [NCERT 1981; MP PET 1985]
  A)
  Methane done clear
  B)
  Ethane done clear
  C)
  Ethene done clear
  D)
  Ethyne done clear
  View Solution play_arrow

• question_answer138)
  Maximum carbon-carbon bond distance is found in [MP PMT 1987; IIT-JEE 1981; Bihar MEE 1995]
  A)
  Ethyne done clear
  B)
  Ethene done clear
  C)
  Ethane done clear
  D)
  Benzene done clear
  View Solution play_arrow

• question_answer139)
  Which of the following reaction is expected to readily give a hydrocarbon product in good yields [CBSE PMT 1997]
  A)
  \[RCOOK\xrightarrow{\text{Oxidation Electrolysis}}\] done clear
  B)
  \[RCOOAg\xrightarrow{{{I}_{2}}}\] done clear
  C)
  \[C{{H}_{3}}-C{{H}_{3}}\underset{hv}{\mathop{\xrightarrow{C{{l}_{2}}}}}\,\] done clear
  D)
  \[{{(C{{H}_{3}})}_{2}}CCl\xrightarrow{{{C}_{2}}{{H}_{5}}OH}\] done clear
  View Solution play_arrow

• question_answer140)
  Out of the following fractions of petroleum, the one having the lowest boiling point is or Which of the following is obtained at lowest temperature by fractional distillation of petroleum [MP PMT 1993; MP PET 1996]
  A)
  Kerosene done clear
  B)
  Diesel oil done clear
  C)
  Gasoline done clear
  D)
  Heavy oil done clear
  View Solution play_arrow

• question_answer141)
  The marsh gas detector used by miners works on the principle of [AMU 1984]
  A)
  Difference in the rates of diffusion of gases done clear
  B)
  Avogadro's hypothesis done clear
  C)
  Gay-Lussac's law of gaseous volumes done clear
  D)
  Berzelius hypothesis done clear
  View Solution play_arrow

• question_answer142)
  Methane can be prepared by [DCE 2001]
  A)
  Wurtz's reaction done clear
  B)
  Decarboxylation done clear
  C)
  Hydrogenation reaction done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer143)
  The most strained cycloalkane is [IIT-JEE 1981]
  A)
  Cyclopropane done clear
  B)
  Cyclobutane done clear
  C)
  Cyclopentane done clear
  D)
  Cyclohexane done clear
  View Solution play_arrow

• question_answer144)
  Which does not react with chlorine in dark [Pb. PMT 2000]
  A)
  \[{{C}_{2}}{{H}_{4}}\] done clear
  B)
  \[{{C}_{2}}{{H}_{2}}\] done clear
  C)
  \[C{{H}_{4}}\] done clear
  D)
  \[C{{H}_{3}}CHO\] done clear
  View Solution play_arrow

• question_answer145)
  Main constituent of marsh gas is [IIT-JEE 1980; MP PMT 1994; AFMC 1997]
  A)
  \[{{C}_{2}}{{H}_{2}}\] done clear
  B)
  \[C{{H}_{4}}\] done clear
  C)
  \[{{H}_{2}}S\] done clear
  D)
  CO done clear
  View Solution play_arrow

• question_answer146)
  Which of the following method can be used for the preparation of methane
  A)
  Wurtz reaction done clear
  B)
  Kolbe's reaction done clear
  C)
  Reduction of alkyl halide done clear
  D)
  Hydrogenation of alkene done clear
  View Solution play_arrow

• question_answer147)
  Which  hydrocarbon will be most stable [MP PET 2000, 03]
  A)
  Methane done clear
  B)
  Ethane done clear
  C)
  Propane done clear
  D)
  Butane done clear
  View Solution play_arrow

• question_answer148)
  C-H bond length is greatest in [IIT-JEE 1989; MNR 1990; AMU 2002]
  A)
  \[{{C}_{2}}{{H}_{2}}\] done clear
  B)
  \[{{C}_{2}}{{H}_{4}}\] done clear
  C)
  \[{{C}_{2}}{{H}_{6}}\] done clear
  D)
  \[{{C}_{2}}{{H}_{2}}B{{r}_{2}}\] done clear
  View Solution play_arrow

• question_answer149)
  Which one of the following compounds does not form an ozonide [EAMCET 1997]
  A)
  Ethene done clear
  B)
  Propyne done clear
  C)
  Propene done clear
  D)
  Propane done clear
  View Solution play_arrow

• question_answer150)
  Which type of hybridisation occurs in ethylene [CBSE PMT 1991; Bihar MEE 1996; JIPMER 1997]
  A)
  sp done clear
  B)
  \[s{{p}^{2}}\] done clear
  C)
  \[s{{p}^{3}}\] done clear
  D)
  \[s{{p}^{3}}d\] done clear
  View Solution play_arrow

• question_answer151)
  Silver acetylide when heated with \[HCl\] gives
  A)
  \[{{C}_{2}}{{H}_{2}}\] done clear
  B)
  \[{{H}_{2}}\] done clear
  C)
  \[{{C}_{2}}{{H}_{4}}\] done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer152)
  When sodium reacts with ethyl iodide, which of the following hydrocarbons is produced [NCERT 1984; BHU 1982]
  A)
  Methane done clear
  B)
  Ethane done clear
  C)
  Butane done clear
  D)
  Ethene done clear
  View Solution play_arrow

• question_answer153)
  Solid methane is [DPMT 1983; CBSE PMT 1989]
  A)
  Molecular solid done clear
  B)
  Ionic solid done clear
  C)
  Covalent solid done clear
  D)
  Not possible done clear
  View Solution play_arrow

• question_answer154)
  The shape of ethane is [Bihar CEE 1995]
  A)
  Triangular done clear
  B)
  Tetrahedral done clear
  C)
  Linear done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer155)
  \[C{{H}_{3}}MgI\] will give methane with [Roorkee 1995]
  A)
  \[{{C}_{2}}{{H}_{5}}OH\] done clear
  B)
  \[C{{H}_{3}}-C{{H}_{2}}-N{{H}_{2}}\] done clear
  C)
  \[C{{H}_{3}}-CO-C{{H}_{3}}\] done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer156)
  Propane-1-ol can be prepared from propene by its reaction with [MP PMT 2003]
  A)
  \[C{{H}_{3}}COOH\] done clear
  B)
  \[{{H}_{3}}B{{O}_{3}}\] done clear
  C)
  \[{{B}_{2}}{{H}_{6}}/NaOH,{{H}_{2}}{{O}_{2}}\] done clear
  D)
  \[{{H}_{2}}S{{O}_{4}}/{{H}_{2}}O\] done clear
  View Solution play_arrow

• question_answer157)
  The process in which higher hydrocarbons are broken down into lower hydrocarbons by controlled pyrolysis, is called [MP PMT 2002]
  A)
  Hydrolysis done clear
  B)
  Cracking done clear
  C)
  Oxidation done clear
  D)
  Reduction done clear
  View Solution play_arrow

• question_answer158)
  Successive alkanes differ by [MP PMT 2002]
  A)
    \[>C{{H}_{2}}\] done clear
  B)
      \[>CH\] done clear
  C)
  \[-\,\,C{{H}_{3}}\] done clear
  D)
  \[{{C}_{2}}{{H}_{4}}\] done clear
  View Solution play_arrow

• question_answer159)
  General formula of alkane is [EAMCET 1979; Manipal MEE 1995]
  A)
  \[{{C}_{n}}{{H}_{2n+2}}\] done clear
  B)
  \[{{C}_{n}}{{H}_{2n-1}}\] done clear
  C)
  \[{{C}_{n}}{{H}_{2n}}\] done clear
  D)
  \[{{C}_{n}}{{H}_{2n+1}}\] done clear
  View Solution play_arrow

• question_answer160)
  Methane and ethane both can be prepared in one step by which of the following compound [BHU 2004]
  A)
  \[{{C}_{2}}{{H}_{4}}\] done clear
  B)
  \[C{{H}_{3}}O\] done clear
  C)
  \[C{{H}_{3}}Br\] done clear
  D)
  \[C{{H}_{3}}C{{H}_{2}}OH\] done clear
  View Solution play_arrow

• question_answer161)
  Photochemical chlorination of alkane is initiated by a process of [Kerala PMT 2004]
  A)
  Pyrolysis done clear
  B)
  Substitution done clear
  C)
  Cracking done clear
  D)
  Peroxidation done clear
  E)
  Homolysis done clear
  View Solution play_arrow

• question_answer162)
  A petroleum fraction having boiling range 70-200°C and containing 6-10 carbon atoms per molecule is called [UPSEAT 2004]
  A)
  Natural gas done clear
  B)
  Gas oil done clear
  C)
  Gasoline done clear
  D)
  Kerosene done clear
  View Solution play_arrow

• question_answer163)
  Producer gas is a mixture of [Pb. CET 2002; UPSEAT 2004]
  A)
  \[CO\] and \[{{N}_{2}}\] done clear
  B)
  \[C{{O}_{2}}\] and \[{{H}_{2}}\] done clear
  C)
  \[{{N}_{2}}\] and \[{{O}_{2}}\] done clear
  D)
  \[C{{H}_{4}}\] and \[{{N}_{2}}\] done clear
  View Solution play_arrow

• question_answer164)
  The highest boiling point is expected for [DEC. 2003]
  A)
  \[n-\]butane done clear
  B)
  iso-octane done clear
  C)
  \[n-\]octane done clear
  D)
  2,2,3,3-tetramethyl butane done clear
  View Solution play_arrow

• question_answer165)
  Which of the following is a good conductor of heat of electricity [Pb. CET 2003]
  A)
  Diamond done clear
  B)
  Graphite done clear
  C)
  Anthracite done clear
  D)
  Charcoal done clear
  View Solution play_arrow

• question_answer166)
  Which one of the following has the minimum boiling point [AIEEE 2004]
  A)
  1-Butene done clear
  B)
  1-Butyne done clear
  C)
  n-Butane done clear
  D)
  Isobutane done clear
  View Solution play_arrow

• question_answer167)
  Octane number can be changed by [AFMC 2004]
  A)
  Isomerisation done clear
  B)
  Alkylation done clear
  C)
  Cyclisation done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer168)
  Gasoline has composition [AFMC 2004]
  A)
  \[{{C}_{8}}-{{C}_{12}}\] done clear
  B)
  \[{{C}_{2}}-{{C}_{5}}\] done clear
  C)
  \[{{C}_{6}}-{{C}_{11}}\] done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer169)
  The complete combustion of \[C{{H}_{4}}\] gives [BHU 2004]
  A)
  \[CO+{{H}_{2}}\] done clear
  B)
  \[CO+{{N}_{2}}\] done clear
  C)
  \[C{{O}_{2}}+{{H}_{2}}O\] done clear
  D)
  \[CO+{{N}_{2}}O\] done clear
  View Solution play_arrow

• question_answer170)
  Which of the following has highest knocking [UPSEAT 2004]
  A)
  Olefins done clear
  B)
  Branched chain olefins done clear
  C)
  Straight chain olefins done clear
  D)
  Aromatic hydrocarbons done clear
  View Solution play_arrow

• question_answer171)
  Which one of the following compounds gives methane on treatment with water [Kerala PMT 2004; MH CET 2004]
  A)
  \[A{{l}_{4}}{{C}_{3}}\] done clear
  B)
  \[Ca{{C}_{2}}\] done clear
  C)
  VC done clear
  D)
  \[SiC\] done clear
  E)
  \[{{B}_{4}}C\] done clear
  View Solution play_arrow

• question_answer172)
  Pick out the alkane which differs from the other members of the group. [KCET 2004]
  A)
  2,2-dimethyl propane done clear
  B)
  Pentane done clear
  C)
  2-methyl butane done clear
  D)
  2,2-dimethyl butane done clear
  View Solution play_arrow

• question_answer173)
  2-Methylbutane on reacting with bromine in the presence of sunlight gives mainly [AIEEE 2005]
  A)
  1-bromo-2-methylbutane done clear
  B)
  2-bromo-2-methylbutane done clear
  C)
  2-bromo-3-methylbutane done clear
  D)
  1-bromo-3-methylbutane done clear
  View Solution play_arrow

• question_answer174)
  Of the five isomeric hexanes, the isomer which can give two monochlorinated compounds is [AIEEE 2005]
  A)
  n-hexane done clear
  B)
  2, 3-dimethylbutane done clear
  C)
  2, 2-dimethylbutane done clear
  D)
  2-methylpentane done clear
  View Solution play_arrow

• question_answer175)
  The product obtained on reaction of \[{{C}_{2}}{{H}_{5}}Cl\] with hydrogen over palladium carbon is [AFMC 2005]
  A)
  \[{{C}_{3}}{{H}_{8}}\] done clear
  B)
  \[{{C}_{4}}{{H}_{10}}\] done clear
  C)
  \[{{C}_{2}}{{H}_{6}}\] done clear
  D)
  \[{{C}_{2}}{{H}_{4}}\] done clear
  View Solution play_arrow