JEE Main & Advanced Chemistry GOC Question Bank

done Structural and stereo isomerism Total Questions - 151

• question_answer1)
  Only two isomers of monochloro product is possible of     [IIT-JEE 1986]
  A)
  n-butane done clear
  B)
  2,4-dimethyl pentane done clear
  C)
  Benzene done clear
  D)
  1-methyl propane done clear
  View Solution play_arrow

• question_answer2)
  Which is the example of branch isomerization [NCERT 1976]
  A)
  \[\underset{{}}{\mathop{\underset{{}}{\mathop{\overset{C}{\mathop{\overset{|}{\mathop{C-C-C}}\,}}\,}}\,}}\,-C\]- C and \[\underset{C}{\mathop{\underset{|}{\mathop{\overset{C}{\mathop{\overset{|}{\mathop{C-C-C}}\,}}\,}}\,}}\,\] done clear
  B)
  \[\underset{C}{\mathop{\underset{|}{\mathop{\overset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C}{\mathop{\overset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|}{\mathop{C-C-C}}\,}}\,}}\,}}\,\] and \[\underset{C}{\mathop{\underset{|}{\mathop{\overset{C\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{\overset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{C-C-C}}\,}}\,}}\,}}\,\] done clear
  C)
  \[\begin{matrix}    C  \\    C  \\ \end{matrix}>C-C-C\] and \[\underset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C}{\mathop{\underset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|}{\mathop{\overset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,C}{\mathop{\overset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|}{\mathop{C-C-C}}\,}}\,}}\,}}\,\] done clear
  D)
  \[C-C-C-C\] and \[\underset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C}{\mathop{\underset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|}{\mathop{C-C-C}}\,}}\,\] done clear
  View Solution play_arrow

• question_answer3)
  The isomer of diethyl ether is [CPMT 1975]
  A)
  \[{{(C{{H}_{3}})}_{2}}CHOH\] done clear
  B)
  \[{{(C{{H}_{3}})}_{3}}C-OH\] done clear
  C)
  \[{{C}_{3}}{{H}_{7}}OH\] done clear
  D)
  \[{{({{C}_{2}}{{H}_{5}})}_{2}}CHOH\] done clear
  View Solution play_arrow

• question_answer4)
  Isomers have essentially identical [CBSE PMT 1988; MP PMT 1983, 86]
  A)
  Structural formula done clear
  B)
  Chemical properties done clear
  C)
  Molecular formula done clear
  D)
  Physical properties done clear
  View Solution play_arrow

• question_answer5)
  Which one of the following shows optical activity [NCERT 1984, 90]
  A)
  \[HO-\underset{H}{\mathop{\underset{|}{\mathop{\overset{H}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-COOH\] done clear
  B)
  \[C{{H}_{3}}-\underset{Cl}{\mathop{\underset{|}{\mathop{\overset{H}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-COOH\] done clear
  C)
  \[C{{H}_{3}}-\underset{OH\,\,}{\mathop{\underset{|\,\,\,\,\,\,}{\mathop{\overset{C{{H}_{3}}}{\mathop{\overset{|\,\,\,\,\,}{\mathop{C-\,}}\,}}\,}}\,}}\,COOH\] done clear
  D)
  \[C{{H}_{3}}-\underset{Cl\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,}{\mathop{\overset{C{{H}_{3}}}{\mathop{\overset{|\,\,\,\,\,\,}{\mathop{C-\,}}\,}}\,}}\,}}\,COOH\] done clear
  View Solution play_arrow

• question_answer6)
  In ethane and cyclohexane which one of the following pairs of conformations are more stable
  A)
  Eclipsed and chair conformations done clear
  B)
  Staggered and chair conformations done clear
  C)
  Staggered and boat conformations done clear
  D)
  Eclipsed and boat conformations done clear
  View Solution play_arrow

• question_answer7)
  Which of the following may exist in enantiomorphs [CBSE PMT 1988]
  A)
  \[C{{H}_{3}}-\overset{C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{\overset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{CH-COOH\,}}\,}}\,\] done clear
  B)
  \[C{{H}_{2}}=CHC{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\] done clear
  C)
  \[C{{H}_{3}}-\overset{N{{H}_{2}}\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{\overset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{CH-C{{H}_{3}}\,}}\,}}\,\] done clear
  D)
  \[C{{H}_{3}}-C{{H}_{2}}-\overset{N{{H}_{2}}\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{\overset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{CH-C{{H}_{3}}}}\,}}\,\] done clear
  View Solution play_arrow

• question_answer8)
  Which of the following compounds may not exist as enantiomers [CPMT 1987]
  A)
  \[C{{H}_{3}}CH(OH)C{{O}_{2}}H\] done clear
  B)
  \[C{{H}_{3}}C{{H}_{2}}CH(C{{H}_{3}})C{{H}_{2}}OH\] done clear
  C)
  \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}C{{H}_{3}}\] done clear
  D)
  \[{{C}_{6}}{{H}_{5}}CHClC{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer9)
  Number of isomers of molecular formula \[{{C}_{2}}{{H}_{2}}B{{r}_{2}}\] are [CPMT 1987]
  A)
  1 done clear
  B)
  2 done clear
  C)
  3 done clear
  D)
  0 done clear
  View Solution play_arrow

• question_answer10)
  Lactic acid shows which type of isomerism [CPMT 1987; MP PMT 1987; BHU 2003]
  A)
  Geometrical isomerism done clear
  B)
  Tautomerism done clear
  C)
  Optical isomerism done clear
  D)
  Metamerism done clear
  View Solution play_arrow

• question_answer11)
  Which one of the following is an optically active compound [CBSE PMT 1988; DPMT 1983]
  A)
  n-propanol done clear
  B)
  2-chlorobutane done clear
  C)
  n-butanol done clear
  D)
  4-hydroxyheptane done clear
  View Solution play_arrow

• question_answer12)
  Compounds with same molecular formula but different structural formulae are called [BHU 1979; AFMC 1989]
  A)
  Isomers done clear
  B)
  Isotopes done clear
  C)
  Isobars done clear
  D)
  Isoelectronic done clear
  View Solution play_arrow

• question_answer13)
  Which one of the following compounds shows optical isomerism [MP PET 1990]
  A)
  \[C{{H}_{3}}CHCl-C{{H}_{2}}-C{{H}_{3}}\] done clear
  B)
  \[C{{H}_{3}}-C{{H}_{2}}-CHCl-C{{H}_{2}}-C{{H}_{3}}\] done clear
  C)
  \[ClC{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\] done clear
  D)
  \[ClC{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer14)
  Which one of the following objects is ?achiral?
  A)
  Letter P done clear
  B)
  Letter F done clear
  C)
  Ball done clear
  D)
  A pair of hand done clear
  View Solution play_arrow

• question_answer15)
  Total number of isomers of a disubstituted benzene compound is
  A)
  1 done clear
  B)
  2 done clear
  C)
  3 done clear
  D)
  4 done clear
  View Solution play_arrow

• question_answer16)
  Separating of d and l enantiomorphs from a racemic mixture is called [CBSE PMT 1988; DPMT 1983; KCET 2002]
  A)
  Resolution done clear
  B)
  Dehydration done clear
  C)
  Rotation done clear
  D)
  Dehydrohalogenation done clear
  View Solution play_arrow

• question_answer17)
  Number of optical isomers of lactic acid are
  A)
  1 done clear
  B)
  2 done clear
  C)
  3 done clear
  D)
  4 done clear
  View Solution play_arrow

• question_answer18)
  Which one of the following contains asymmetric carbon atom [IIT-JEE 1989; Roorkee 2000]
  A)
  \[H-\underset{H\,\,}{\mathop{\ \underset{|\,\,\,\,}{\mathop{\overset{Cl\,\,}{\mathop{\overset{|\,\,\,\,\,}{\mathop{C-\,}}\,}}\,}}\,}}\,\underset{H\,\,}{\mathop{\underset{|\,\,\,\,}{\mathop{\overset{Br\,\,}{\mathop{\overset{|\,\,\,\,\,}{\mathop{C-\,}}\,}}\,}}\,}}\,H\] done clear
  B)
  \[H-\underset{H\,\,}{\mathop{\underset{|\,\,\,\,}{\mathop{\overset{H\,\,\,}{\mathop{\overset{|\,\,\,\,\,}{\mathop{C-\,}}\,}}\,}}\,}}\,\underset{H\,\,}{\mathop{\underset{|\,\,\,\,}{\mathop{\overset{Cl\,\,}{\mathop{\overset{|\,\,\,\,\,}{\mathop{C-\,}}\,}}\,}}\,}}\,Cl\] done clear
  C)
  \[H-\underset{H\,\,}{\mathop{\underset{|\,\,\,\,}{\mathop{\overset{H\,\,}{\mathop{\overset{|\,\,\,\,\,}{\mathop{C-\,}}\,}}\,}}\,}}\,\underset{H\,\,}{\mathop{\underset{|\,\,\,\,}{\mathop{\overset{H\,\,}{\mathop{\overset{|\,\,\,\,\,}{\mathop{C-\,}}\,}}\,}}\,}}\,H\] done clear
  D)
  \[H-\underset{Br\,\,}{\mathop{\underset{|\,\,\,\,}{\mathop{\overset{H\,\,}{\mathop{\overset{|\,\,\,\,\,}{\mathop{C-\,}}\,}}\,}}\,}}\,\underset{OH\,\,}{\mathop{\underset{|\,\,\,\,}{\mathop{\overset{H\,\,\,\,}{\mathop{\overset{|\,\,\,\,\,}{\mathop{C-\,}}\,}}\,}}\,}}\,C{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer19)
  n-butane and isobutane are examples of
  A)
  Chain isomers done clear
  B)
  Geometrical isomers done clear
  C)
  Position isomers done clear
  D)
  Tautomers done clear
  View Solution play_arrow

• question_answer20)
  Which of the following has chiral structure
  A)
  \[C{{H}_{3}}-\overset{C{{H}_{3}}\,\,}{\mathop{\overset{|\,\,\,\,\,\,\,\,\,}{\mathop{CH-\,}}\,}}\,C{{H}_{2}}COOH\] done clear
  B)
  \[C{{H}_{3}}-CH=CH-C{{H}_{3}}\] done clear
  C)
  \[C{{H}_{3}}-\overset{C{{H}_{3}}}{\mathop{\overset{|\,\,\,\,\,\,\,\,}{\mathop{CH-\,}}\,}}\,C{{H}_{2}}OH\] done clear
  D)
  \[C{{H}_{3}}-CHOH-C{{H}_{2}}C{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer21)
  Which of the following pairs is an example of position isomerism
  A)
  \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\] and \[C{{H}_{3}}-\underset{C{{H}_{3}}\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,}{\mathop{CH-}}\,}}\,C{{H}_{3}}\] done clear
  B)
  \[C{{H}_{3}}-C{{H}_{2}}-CH=C{{H}_{2}}\] and \[C{{H}_{3}}-CH=CH-C{{H}_{3}}\] done clear
  C)
  \[C{{H}_{3}}-C{{H}_{2}}OH\] and \[C{{H}_{3}}-O-C{{H}_{3}}\] done clear
  D)
   \[C{{H}_{3}}-\underset{C{{H}_{3}}\,\,\,\,\,\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{\overset{C{{H}_{3}}\,\,\,\,\,\,\,\,}{\mathop{\overset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{C-C{{H}_{3}}\,}}\,}}\,}}\,}}\,\]and\[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer22)
  Geometrical isomerism is shown by [IIT-JEE 1983; CPMT 1990, 94; CBSE PMT 1992; MP PET 1997; AMU (Engg.) 1999]
  A)
  2-butene done clear
  B)
  2-butyne done clear
  C)
  2-butanol done clear
  D)
  Butanal done clear
  View Solution play_arrow

• question_answer23)
  An organic compound exhibits optical isomerism when [CPMT 1971, 78, 81; MP PET 1999]
  A)
  Four groups linked to carbon atom are different done clear
  B)
  Three groups linked to carbon atom are different done clear
  C)
  Two groups linked to carbon atom are different done clear
  D)
  All the groups linked to carbon atom are same done clear
  View Solution play_arrow

• question_answer24)
  Which one of the following exhibits geometrical isomerism [NCERT 1979; DPMT 1984; CBSE PMT 1990]
  A)
  \[\begin{matrix}    \ \ \ \ H  \\    {{H}_{3}}C  \\ \end{matrix}>C=C<\begin{matrix}    H\ \ \   \\    C{{H}_{3}}  \\ \end{matrix}\] done clear
  B)
  \[\begin{matrix}    {{C}_{2}}H  \\    \,\,\,\ H  \\ \end{matrix}>C=C<\begin{matrix}    H  \\    H  \\ \end{matrix}\] done clear
  C)
  \[\begin{matrix}    C{{H}_{3}}  \\    C{{H}_{3}}  \\ \end{matrix}>C=C<\begin{matrix}    H  \\    H  \\ \end{matrix}\] done clear
  D)
   \[H-\overset{C{{H}_{3}}}{\mathop{\underset{H}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}\,\ -}}\,\underset{H}{\mathop{\underset{|}{\mathop{C}}\,}}\,=C<\begin{matrix}    H  \\    H  \\ \end{matrix}\] done clear
  View Solution play_arrow

• question_answer25)
  Maximum number of isomers of alkene \[{{C}_{4}}{{H}_{8}}\] are [IIT-JEE 1982; MP PMT 1985; MADT Bihar 1995; Kerala (Engg.) 2002]
  A)
  2 done clear
  B)
  3 done clear
  C)
  4 done clear
  D)
  6 done clear
  View Solution play_arrow

• question_answer26)
  Rotation of plane polarised light is measured by [CPMT 1985; DCE 2001]
  A)
  Manometer done clear
  B)
  Polari meter done clear
  C)
  Viscometer done clear
  D)
  Refractometer done clear
  View Solution play_arrow

• question_answer27)
  An alkane forms isomers if the number of least carbon atom is [CPMT 1976; BHU 1985, 89]
  A)
  1 done clear
  B)
  2 done clear
  C)
  3 done clear
  D)
  4 done clear
  View Solution play_arrow

• question_answer28)
  Which is not found in alkenes [AIIMS 1982; RPMT 1999]
  A)
  Chain isomerism done clear
  B)
  Geometrical isomerism done clear
  C)
  Metamerism done clear
  D)
  Position isomerism done clear
  View Solution play_arrow

• question_answer29)
  How many isomers of \[{{C}_{5}}{{H}_{11}}OH\] will be primary alcohols [CBSE PMT 1992]
  A)
  2 done clear
  B)
  3 done clear
  C)
  4 done clear
  D)
  5 done clear
  View Solution play_arrow

• question_answer30)
  The compound \[{{C}_{4}}{{H}_{10}}O\] can show [IIT-JEE 1981; MP PET 2000]
  A)
  Metamerism done clear
  B)
  Functional isomerism done clear
  C)
  Positional isomerism done clear
  D)
  All types done clear
  View Solution play_arrow

• question_answer31)
  The number of possible alcoholic isomers for \[{{C}_{4}}{{H}_{10}}O\] are [DPMT 1984; MNR 1986]
  A)
  4 done clear
  B)
  2 done clear
  C)
  3 done clear
  D)
  5 done clear
  View Solution play_arrow

• question_answer32)
  How many isomers are possible for \[{{C}_{4}}{{H}_{8}}O\] [MNR 1992; UPSEAT 2001, 02]
  A)
  3 done clear
  B)
  4 done clear
  C)
  5 done clear
  D)
  6 done clear
  View Solution play_arrow

• question_answer33)
  Which of the following can exhibit cis-trans isomerism [CBSE PMT 1989]
  A)
  HC \[\equiv \] CH done clear
  B)
  ClCH = CHCl done clear
  C)
  \[C{{H}_{3}}.CHCl.COOH\] done clear
  D)
  \[ClC{{H}_{2}}-C{{H}_{2}}Cl\] done clear
  View Solution play_arrow

• question_answer34)
  The number of geometrical isomers in case of a compound with the structure \[C{{H}_{3}}-CH=CH-CH=CH-{{C}_{2}}{{H}_{5}}\] is [NCERT 1980]
  A)
  4 done clear
  B)
  3 done clear
  C)
  2 done clear
  D)
  5 done clear
  View Solution play_arrow

• question_answer35)
  The property by virtue of which a compound can turn the plane polarised light is known as [BHU 1979]
  A)
  Photolysis done clear
  B)
  Phosphorescence done clear
  C)
  Optical activity done clear
  D)
  Polarization done clear
  View Solution play_arrow

• question_answer36)
  Meso-tartaric acid is optically inactive due to the presence of [AIIMS 1982; MP PMT 1987]
  A)
  Molecular symmetry done clear
  B)
  Molecular asymmetry done clear
  C)
  External compensation done clear
  D)
  Two asymmetric C-atoms done clear
  View Solution play_arrow

• question_answer37)
  Which of the following compounds exhibits optical isomerism [BHU 1983; AFMC 1990; CPMT 1993; MP PMT 1999, 2000]
  A)
  \[C{{H}_{3}}C{{H}_{2}}COOH\] done clear
  B)
  \[C{{H}_{3}}CHOHCOOH\] done clear
  C)
  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}OH\] done clear
  D)
  \[C{{H}_{3}}CHOHC{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer38)
  The maximum number of stereoisomers possible for 2-hydroxy-2-methyl butanoic acid is [Roorkee 1992]
  A)
  1 done clear
  B)
  2 done clear
  C)
  3 done clear
  D)
  4 done clear
  View Solution play_arrow

• question_answer39)
  Which one of the following pairs represents the stereoisomerism [AIIMS 1992]
  A)
  Geometrical isomerism, position isomerism done clear
  B)
  Geometrical isomerism, conformational isomerism done clear
  C)
  Optical isomerism, geometrical isomerism done clear
  D)
  Optical isomerism, metamerism done clear
  View Solution play_arrow

• question_answer40)
  Diethyl ether is not associated with which one of these isomers [AFMC 1993]
  A)
  Butanoic acid done clear
  B)
  Methyl propionate done clear
  C)
  Steroisomerism done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer41)
  Diethyl ether and methyl n-propyl ether are [MP PET 1994; AFMC 1999; MP PMT 2002]
  A)
  Position isomers done clear
  B)
  Functional isomers done clear
  C)
  Metamers done clear
  D)
  Chain isomers done clear
  View Solution play_arrow

• question_answer42)
  n-propyl alcohol and isopropyl alcohol are examples of [MP PMT 1994]
  A)
  Position isomerism done clear
  B)
  Chain isomerism done clear
  C)
  Tautomerism done clear
  D)
  Geometrical isomerism done clear
  View Solution play_arrow

• question_answer43)
  It is possible to distinguish between optical isomers by [Manipal MEE 1995; AFMC 1995]
  A)
  Infrared spectroscopy done clear
  B)
  Mass spectrometry done clear
  C)
  Melting point determination done clear
  D)
  Polarimetry done clear
  View Solution play_arrow

• question_answer44)
  The isomerism exhibited by alkyl cyanide and alkyl isocyanide is [AFMC 1995, 97]
  A)
  Functional done clear
  B)
  Positional done clear
  C)
  Tautomerism done clear
  D)
  Metamerism done clear
  View Solution play_arrow

• question_answer45)
  The following compound can exhibits \[\begin{matrix}    C{{H}_{3}}  \\    C{{H}_{3}}  \\ \end{matrix}>\underset{\begin{smallmatrix}   \\  \ \ C{{H}_{3}} \end{smallmatrix}}{\mathop{C=C}}\,\underset{\cancel{\,\,\,\,\,\,\,\,\,\,}}{\overset{{}}{\mathop{<}}}\,\begin{matrix}    H  \\    C<  \\ \end{matrix}\begin{matrix}    \underset{H\ \ \ \ \ \,}{\mathop{{}}}\,  \\    \underset{COOH}{\mathop{{}}}\,  \\ \end{matrix}\] [IIT-JEE 1995; DCE 2000]
  A)
  Tautomerism done clear
  B)
  Optical isomerism done clear
  C)
  Geometrical isomerism done clear
  D)
  Geometrical and optical isomerisms done clear
  View Solution play_arrow

• question_answer46)
  Name the compound, that is not isomer with diethyl ether [IIT-JEE 1981; CPMT 1989; MADT Bihar 1995]
  A)
  n-propylmethyl ether done clear
  B)
  Butane-1-ol done clear
  C)
  2-methylpropane-2-ol done clear
  D)
  Butanone done clear
  View Solution play_arrow

• question_answer47)
  Which statement is true for cyclohexane [MP PET 1996]
  A)
  It has two possible isomers done clear
  B)
  It has three conformations done clear
  C)
  Boat conformation is most stable done clear
  D)
  Chair and boat conformations differ in energy by 44 kJ/mol done clear
  View Solution play_arrow

• question_answer48)
  Two compounds have the structural formulae \[C{{H}_{3}}-O-C{{H}_{2}}C{{H}_{3}}\] and \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}OH\]. The above is an example of
  A)
  Metamerism done clear
  B)
  Functional isomerism done clear
  C)
  Positional isomerism done clear
  D)
  Chain isomerism done clear
  View Solution play_arrow

• question_answer49)
  Which of the following pairs are not isomeric compounds
  A)
  Ethyl ethanoate and methyl propanoate done clear
  B)
  Butanone and butanal done clear
  C)
  Ethoxy propane and propoxy ethane done clear
  D)
  Methoxy methane and ethanol done clear
  View Solution play_arrow

• question_answer50)
  Functional isomerism is exhibited by the following pair of compounds
  A)
  Acetone, propionaldehyde done clear
  B)
  Diethyl ether, methyl propyl ether done clear
  C)
  Butane, isobutane done clear
  D)
  1-butene, 2-butene done clear
  View Solution play_arrow

• question_answer51)
  The total number of possible isomeric trimethyl benzene is [MP PET 1997]
  A)
  2 done clear
  B)
  3 done clear
  C)
  4 done clear
  D)
  6 done clear
  View Solution play_arrow

• question_answer52)
  Optically active isomers but not mirror images are called [MP PET 1999]
  A)
  Enantiomers done clear
  B)
  Mesomers done clear
  C)
  Tautomers done clear
  D)
  Diastereoisomers done clear
  View Solution play_arrow

• question_answer53)
  \[{{C}_{7}}{{H}_{9}}N\] has how many isomeric forms that contain a benzene ring [CPMT 1997, 99; JIPMER 2002; DCE 2003]
  A)
  4 done clear
  B)
  5 done clear
  C)
  6 done clear
  D)
  7 done clear
  View Solution play_arrow

• question_answer54)
  The total number of isomers formed by \[{{C}_{5}}{{H}_{10}}\] is [Bihar MEE 1996]
  A)
  2 done clear
  B)
  3 done clear
  C)
  4 done clear
  D)
  5 done clear
  E)
  None of these done clear
  View Solution play_arrow

• question_answer55)
  Which of the following contains asymmetric centre [CPMT 1996]
  A)
  2-butene done clear
  B)
  2, 2-dimethylpropane done clear
  C)
  2-hexyne done clear
  D)
  Lactic acid done clear
  View Solution play_arrow

• question_answer56)
  Which of the following cannot be given to exemplify chiral structure [JIPMER 1997]
  A)
  A shoe done clear
  B)
  A screw done clear
  C)
  A screw driver done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer57)
  Which of the following is expected to be optically active [JIPMER 1997]
  A)
  \[{{(C{{H}_{3}})}_{4}}C\] done clear
  B)
  \[{{C}_{2}}{{H}_{5}}CH(C{{H}_{3}}){{C}_{3}}{{H}_{7}}\] done clear
  C)
  \[{{({{C}_{2}}{{H}_{5}})}_{2}}CHC{{H}_{3}}\] done clear
  D)
  \[C{{H}_{3}}CH=CHC{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer58)
  Which compound does not show geometrical isomerism [RPMT 1997]
  A)
  2-butene done clear
  B)
  2-pentene done clear
  C)
  2,3-dibromo-2-butene done clear
  D)
  2-methyl propene done clear
  View Solution play_arrow

• question_answer59)
  The isomers which can be converted into another forms by rotation of the molecules around single bond are [AIIMS 1997]
  A)
  Geometrical isomers done clear
  B)
  Conformers done clear
  C)
  Enantiomers done clear
  D)
  Diastereomers done clear
  View Solution play_arrow

• question_answer60)
  The number of enantiomers of the compound \[C{{H}_{3}}CHBrCHBrCOOH\] is [AIIMS 1997]
  A)
  0 done clear
  B)
  1 done clear
  C)
  3 done clear
  D)
  4 done clear
  View Solution play_arrow

• question_answer61)
  \[{{C}_{6}}{{H}_{5}}C\equiv N\] and \[{{C}_{6}}{{H}_{5}}N\equiv C\] exhibit which type of isomerism [CPMT 1997]
  A)
  Position done clear
  B)
  Functional done clear
  C)
  Dextro isomerism done clear
  D)
  Metamerism done clear
  View Solution play_arrow

• question_answer62)
  Which of the following compounds is not chiral [CBSE PMT 1998; DPMT 2002]
  A)
  \[DC{{H}_{2}}C{{H}_{2}}C{{H}_{2}}Cl\] done clear
  B)
  \[C{{H}_{3}}C{{H}_{2}}CHDCl\] done clear
  C)
  \[C{{H}_{3}}CHDC{{H}_{2}}C{{H}_{2}}Cl\] done clear
  D)
  \[C{{H}_{2}}CHClC{{H}_{2}}D\] done clear
  View Solution play_arrow

• question_answer63)
  cis and trans 2-butene are [BHU 1998; DPMT 2002]
  A)
  Conformational isomers done clear
  B)
  Optical isomers done clear
  C)
  Position isomers done clear
  D)
  Geometrical isomers done clear
  View Solution play_arrow

• question_answer64)
  Which one of the following is the chiral molecule [BHU 1998; 2005]
  A)
  \[C{{H}_{3}}Cl\] done clear
  B)
  \[C{{H}_{2}}C{{l}_{2}}\] done clear
  C)
  \[CHB{{r}_{3}}\] done clear
  D)
  \[CHClBrI\] done clear
  View Solution play_arrow

• question_answer65)
  Cyanide and isocyanide are isomers of type [AFMC 1997]
  A)
  Positional done clear
  B)
  Functional done clear
  C)
  Tautomer done clear
  D)
  Structural done clear
  View Solution play_arrow

• question_answer66)
  Glucose and fructose are [AMU (Engg.) 1999]
  A)
  Optical isomers done clear
  B)
  Functional isomers done clear
  C)
  Position isomers done clear
  D)
  Chain isomers done clear
  View Solution play_arrow

• question_answer67)
  Which of the following compounds which is an optically active compound [UPSEAT 1999]
  A)
  1-butanol done clear
  B)
  2-butanol done clear
  C)
  3-butanol done clear
  D)
  4-heptanol done clear
  View Solution play_arrow

• question_answer68)
  d-tartaric acid and l-tartaric acid are [MH CET 1999]
  A)
  Enantiomers done clear
  B)
  Tautomers done clear
  C)
  Diastereoisomers done clear
  D)
  Structural isomers done clear
  View Solution play_arrow

• question_answer69)
  Minimum resistance in bond rotation will be observed in the compound [RPMT 1999]
  A)
  Hexachloroethane done clear
  B)
  Ethylene done clear
  C)
  Acetylene done clear
  D)
  Ethane done clear
  View Solution play_arrow

• question_answer70)
  Which pair show cis-trans isomerism [RPET 1999]
  A)
  Maleic-fumaric acid done clear
  B)
  Lactic-tartaric acid done clear
  C)
  Malonic-succinic acid done clear
  D)
  Crotonic-acrylic acid done clear
  View Solution play_arrow

• question_answer71)
  1, 2-Dichloroethene shows [RPET 1999]
  A)
  Geometrical isomerism done clear
  B)
  Optical isomerism done clear
  C)
  Ring-chain isomerism done clear
  D)
  Resonance done clear
  View Solution play_arrow

• question_answer72)
  Which compound is optically active [DCE 1999]
  A)
  4-chloro, 1 hydroxy butane done clear
  B)
  \[{{3}^{o}}\]-butyl alcohol done clear
  C)
  Secondary butyl amine done clear
  D)
  n-butyl alcohol done clear
  View Solution play_arrow

• question_answer73)
  Choose the pair of chain isomer [RPMT 2000]
  A)
  \[C{{H}_{3}}CHB{{r}_{2}}\] and  \[C{{H}_{2}}BrC{{H}_{2}}Br\] done clear
  B)
  1-propanol and 2-propanol done clear
  C)
  Neo-pentane and isopentane done clear
  D)
  Diethyl ether and methyl-n-propyl ether done clear
  View Solution play_arrow

• question_answer74)
  Optical isomerism arises due to the presence of [RPMT 2000]
  A)
  An asymmetric carbon atom done clear
  B)
  Centre of symmetry done clear
  C)
  Axis of symmetry done clear
  D)
  Plane of symmetry done clear
  View Solution play_arrow

• question_answer75)
  Least hindered rotation about carbon-carbon bond is observed in [RPMT 2000]
  A)
  Ethane done clear
  B)
  Ethylene done clear
  C)
  Ethyne done clear
  D)
  Hexachloroethane done clear
  View Solution play_arrow

• question_answer76)
  Which pair represents chain isomer [RPMT 2000]
  A)
  \[C{{H}_{3}}CHC{{l}_{2}}\] and \[ClC{{H}_{2}}C{{H}_{2}}Cl\] done clear
  B)
  n-propyl alcohol and isopropyl alcohol done clear
  C)
  2-methyl-1 propanol and 2-Methyl-2 propanol done clear
  D)
  2-methyl butane and neopentane done clear
  View Solution play_arrow

• question_answer77)
  Which of the following compounds will exhibit geometrical isomerism [IIT-JEE Screening 2000]
  A)
  1-phenyl-2-butene done clear
  B)
  3-phenyl-1-butene done clear
  C)
  2-phenyl-1-butene done clear
  D)
  1, 1-Diphenyl-1-propene done clear
  View Solution play_arrow

• question_answer78)
  On bromination, propionic acid yields two isomeric 2-bromopropionic acids. This pair is an important example of [BHU 2000]
  A)
  Chain isomers done clear
  B)
  Optical isomers done clear
  C)
  Cis-trans isomers done clear
  D)
  Position isomers done clear
  View Solution play_arrow

• question_answer79)
  Geometrical isomerism is not possible in [CPMT 2000]
  A)
  Propene done clear
  B)
  3-hexane done clear
  C)
  Butenedioic acid done clear
  D)
  Cyclic compound done clear
  View Solution play_arrow

• question_answer80)
  Only two isomeric monochloro derivatives are possible for [Pb. PMT 2000]
  A)
  2-methyl propane done clear
  B)
  n-pentane done clear
  C)
  Benzene done clear
  D)
  2, 4-dimethyl pentane done clear
  View Solution play_arrow

• question_answer81)
  Lactic acid in which a methyl group, a hydroxyl group, a carboxylic acid group and a hydrogen atom are attached to a central carbon atom, shown optical isomerism due to the molecular geometry at the [Pb. PMT 2000]
  A)
  Central carbon atom done clear
  B)
  Carbon atom of the methyl group done clear
  C)
  Carbon atom of the carboxylic acid group done clear
  D)
  Oxygen of the hydroxyl groups done clear
  View Solution play_arrow

• question_answer82)
  The number of possible alkynes with molecular formula  \[{{C}_{5}}{{H}_{8}}\]  is [MP PMT 2000]
  A)
  2 done clear
  B)
  3 done clear
  C)
  4 done clear
  D)
  5 done clear
  View Solution play_arrow

• question_answer83)
  Which of the following will not lose asymmetry on reduction with \[LiAl{{H}_{4}}\] [Roorkee 2000]
  A)
  \[HO{{H}_{2}}C\begin{matrix}    \,\,\,CHO\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\    +C{{H}_{2}}C{{H}_{3}}  \\    \,\,\,\,\,\,CH=C{{H}_{2}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\ \end{matrix}\] done clear
  B)
  \[{{H}_{2}}C=HCO\,\,\,+\,\,\,\begin{matrix}    \,\,\,\,C{{H}_{3}}\,\,\,\,\,\,\,  \\    \,\,\,\,\,\,\,\,\,CHO  \\    \,\,\,\,C{{H}_{2}}C{{H}_{3}}  \\ \end{matrix}\] done clear
  C)
  \[HO{{H}_{2}}C+\begin{matrix}    C{{H}_{3}}\,\,\,\,\,\,  \\    \,\,\,\,\,\,\,\,\,COOH  \\    C\equiv CH\,\,\,  \\ \end{matrix}\] done clear
  D)
  \[{{H}_{3}}C+\begin{matrix}    CHO\,\,\,\,\,\,\,\,  \\    \,\,\,\,\,\,\,\,\,\,\,C\equiv N  \\    C{{H}_{2}}N{{H}_{2}}  \\ \end{matrix}\] done clear
  View Solution play_arrow

• question_answer84)
  Reason for geometrical isomerism by 2-butene is  [CBSE PMT 2000]
  A)
  Chiral carbon done clear
  B)
  Free rotation about single bond done clear
  C)
  Free rotation about double bond done clear
  D)
  Restricted rotation about double bond done clear
  View Solution play_arrow

• question_answer85)
  Stereoisomers which are not the mirror images of one another are called [RPMT 2000]
  A)
  Enantiomers done clear
  B)
  Mesomers done clear
  C)
  Tautomers done clear
  D)
  Diasteroisomers done clear
  View Solution play_arrow

• question_answer86)
  The isomerism shown by n-butyl alcohol and isobutyl alcohol is [RPMT 2000]
  A)
  Metamerism done clear
  B)
  Chain done clear
  C)
  Position done clear
  D)
  Stereo done clear
  View Solution play_arrow

• question_answer87)
  Which is optically active [MH CET 2001]
  A)
  \[C{{H}_{2}}C{{l}_{2}}\] done clear
  B)
  \[CHC{{l}_{3}}\] done clear
  C)
  Meso form of tartaric acid done clear
  D)
  Glyceraldehyde done clear
  View Solution play_arrow

• question_answer88)
  Which of the following will show geometrical isomerism [CPMT 2001; BHU 2005]
  A)
  \[C{{H}_{3}}CH=CHC{{H}_{3}}\] done clear
  B)
  \[{{(C{{H}_{3}})}_{2}}C=C\,{{(C{{H}_{3}})}_{2}}\] done clear
  C)
  \[{{N}_{2}}O.FeS{{O}_{4}}\] done clear
  D)
  \[C{{H}_{3}}-CH=C\,{{(C{{H}_{3}})}_{2}}\] done clear
  View Solution play_arrow

• question_answer89)
  What is the maximum number of open chain structures possible for \[{{C}_{4}}{{H}_{8}}\] [MP PET 2001]
  A)
  2 done clear
  B)
  3 done clear
  C)
  4 done clear
  D)
  1 done clear
  View Solution play_arrow

• question_answer90)
  Glucose has optical isomers [DCE 2001]
  A)
  8 done clear
  B)
  12 done clear
  C)
  16 done clear
  D)
  Cannot be predicted done clear
  View Solution play_arrow

• question_answer91)
  An organic compound \[^{1}C{{H}_{3}}{{-}^{2}}C{{H}_{2}}{{-}^{3}}C{{H}_{2}}{{-}^{4}}C{{H}_{2}}{{-}^{5}}C{{H}_{2}}{{-}^{6}}C{{H}_{2}}{{-}^{7}}C{{H}_{3}}\] To make it chiral compound the attack should be on which carbon atom [DCE 2001]
  A)
  1 done clear
  B)
  3 done clear
  C)
  4 done clear
  D)
  7 done clear
  View Solution play_arrow

• question_answer92)
  Which of the following statements is not true about enantiomers [DCE 2001]
  A)
  They have same physical properties done clear
  B)
  They have different biological properties done clear
  C)
  They have same chemical properties towards chiral compounds done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer93)
  Meso-tartaric acid is [BHU 2001]
  A)
  Optically inactive done clear
  B)
  Optically active because of molecular symmetry done clear
  C)
  Optically inactive due to external compensation done clear
  D)
  Optically active because of asymmetric carbon atom done clear
  View Solution play_arrow

• question_answer94)
  The number of possible isomers of the compound with molecular formula  \[{{C}_{7}}{{H}_{8}}O\] is [BHU 2001]
  A)
  3 done clear
  B)
  5 done clear
  C)
  7 done clear
  D)
  9 done clear
  View Solution play_arrow

• question_answer95)
  The number of isomers for the compound with molecular formula  \[{{C}_{2}}BrClFI\]is [IIT-JEE (Screening) 2001]
  A)
  3 done clear
  B)
  4 done clear
  C)
  5 done clear
  D)
  6 done clear
  View Solution play_arrow

• question_answer96)
  Hydrogenation of the adjoining compound in the presence of poisoned palladium catalyst gives    [IIT-JEE (Screening) 2001]
  A)
  An optically active compound done clear
  B)
  An optically inactive compound done clear
  C)
  A racemic mixture done clear
  D)
  A diastereomeric mixture done clear
  View Solution play_arrow

• question_answer97)
  The number of possible structural isomers for a compound with the molecular formula \[{{C}_{7}}{{H}_{16}}\] is [DCE 2001]
  A)
  8 done clear
  B)
  9 done clear
  C)
  10 done clear
  D)
  12 done clear
  View Solution play_arrow

• question_answer98)
  Which of the following molecule contains asymmetric carbon atom [JIPMER 2002]
  A)
  \[C{{H}_{3}}CHClCOOH\] done clear
  B)
  \[C{{H}_{3}}C{{H}_{2}}COOH\] done clear
  C)
  \[ClC{{H}_{2}}C{{H}_{2}}COOH\] done clear
  D)
  \[C{{l}_{2}}CHCOOH\] done clear
  View Solution play_arrow

• question_answer99)
  A similarity between optical and geometrical isomerism is that [AIEEE 2002]
  A)
  Each forms equal number of isomers for a given compound done clear
  B)
  If in a compound one is present then so is the other done clear
  C)
  Both are included in stereoisomerism done clear
  D)
  They have no similarity done clear
  View Solution play_arrow

• question_answer100)
  If the light waves pass through a nicol prism then all the oscillations occur only in one plane, such beam of light is called as [Kerala (Med.) 2002]
  A)
  Non-polarised light done clear
  B)
  Plane polarised light done clear
  C)
  Polarised light done clear
  D)
  Optical light done clear
  View Solution play_arrow

• question_answer101)
  Racemic mixture is formed by mixing two [AIEEE 2002]
  A)
  Isomeric compounds done clear
  B)
  Chiral compounds done clear
  C)
  Meso compounds done clear
  D)
  Optical isomers done clear
  View Solution play_arrow

• question_answer102)
  Which of the following does not show geometrical isomerism [AIEEE 2002]
  A)
  1, 2 dichloro-1-pentene done clear
  B)
  1, 3-dichloro-2-pentene done clear
  C)
  1, 1-dichloro-1-pentene done clear
  D)
  1, 4-dichloro-2-pentene done clear
  View Solution play_arrow

• question_answer103)
  \[\underset{H}{\overset{{{H}_{3}}C}{\mathop{{}}}}\,>C=C<\underset{H}{\overset{C{{H}_{3}}}{\mathop{{}}}}\,\] and  \[\begin{matrix}    {{H}_{3}}C & {} & H  \\    {} & >C=C< & {}  \\    \,\,\,\,H & {} & C{{H}_{3}}  \\ \end{matrix}\]exhibit which isomerism [MP PET 2002]
  A)
  Position isomerism done clear
  B)
  Geometrical isomerism done clear
  C)
  Optical isomerism done clear
  D)
  Functional  isomerism done clear
  View Solution play_arrow

• question_answer104)
  Which compound is chiral [RPMT 2002]
  A)
  butane done clear
  B)
  1-chloro-2-methyl butane done clear
  C)
  2-methyl butane done clear
  D)
  2-methyl propane done clear
  View Solution play_arrow

• question_answer105)
  Methyl acetate and propionic acid are [RPMT 2002]
  A)
  Functional isomer done clear
  B)
  Structural isomer done clear
  C)
  Stereoisomer done clear
  D)
  Geometrical isomer done clear
  View Solution play_arrow

• question_answer106)
  Which compound shows cis-trans isomerism [CPMT 2002]
  A)
  1-butene done clear
  B)
  2-propene done clear
  C)
  2-butene done clear
  D)
  Benzene done clear
  View Solution play_arrow

• question_answer107)
  Isomers of propionic acid are [MP PMT 2002]
  A)
  \[HCOO{{C}_{2}}{{H}_{5}}\] and \[C{{H}_{3}}COOC{{H}_{3}}\] done clear
  B)
  \[HCOO{{C}_{2}}{{H}_{5}}\] and \[{{C}_{3}}{{H}_{7}}COOC{{H}_{3}}\] done clear
  C)
  \[C{{H}_{3}}COOC{{H}_{3}}\] and \[{{C}_{3}}{{H}_{7}}OH\] done clear
  D)
  \[{{C}_{3}}{{H}_{7}}OH\]and \[C{{H}_{3}}COC{{H}_{3}}\] done clear
  View Solution play_arrow

• question_answer108)
  The functional isomer of ethyl alcohol is [MP PMT 2002]
  A)
  \[C{{H}_{3}}OC{{H}_{3}}\] done clear
  B)
  \[C{{H}_{3}}COC{{H}_{3}}\] done clear
  C)
  \[C{{H}_{3}}COOH\] done clear
  D)
  \[C{{H}_{3}}C{{H}_{2}}CHO\] done clear
  View Solution play_arrow

• question_answer109)
  Disymmetric object is one which is [Kerala (Engg.) 2002]
  A)
  Superimposable on its mirror image done clear
  B)
  Non-superimposible on its mirror image done clear
  C)
  Optically inactive done clear
  D)
  Achiral done clear
  View Solution play_arrow

• question_answer110)
  Geometrical isomers differ in [CBSE PMT 2002]
  A)
  Position of atoms done clear
  B)
  Length of carbon done clear
  C)
  Spatial arrangement of atoms done clear
  D)
  Position of functional group done clear
  View Solution play_arrow

• question_answer111)
  Which of the following hydride is capable of showing conformations [JIPMER 2002]
  A)
  \[N{{H}_{2}}-N{{H}_{2}}\] done clear
  B)
  \[{{B}_{2}}{{H}_{6}}\]ssss done clear
  C)
  \[C{{H}_{4}}\] done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer112)
  Which of the following is an chiral compound [AIIMS 2002]
  A)
  Hexane done clear
  B)
  Methane done clear
  C)
  n-butane done clear
  D)
  2,3,4-trimethyl hexane done clear
  View Solution play_arrow

• question_answer113)
  What is the possible number of optical isomers for a compound containing 2-dissimilar asymmetric carbon atom [CPMT 1999; UPSEAT 1999, 2000, 02]
  A)
  2 done clear
  B)
  4 done clear
  C)
  6 done clear
  D)
  8 done clear
  View Solution play_arrow

• question_answer114)
  Which of the following compounds is optically active [Pb. PMT 2001; AMU 2002; Kerala (Med.) 2003]
  A)
  \[{{(C{{H}_{3}})}_{2}}CHC{{H}_{2}}OH\] done clear
  B)
  \[C{{H}_{3}}C{{H}_{2}}OH\] done clear
  C)
  \[CC{{l}_{2}}{{F}_{2}}\] done clear
  D)
  \[C{{H}_{3}}CHOH{{C}_{2}}{{H}_{5}}\] done clear
  View Solution play_arrow

• question_answer115)
  Optically active compound is   [UPSEAT 2002]
  A)
  3-chloropentane done clear
  B)
  2-chlorobutane done clear
  C)
  2-chloropropane done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer116)
  If a carbon atom is attached to \[-H,-OH,-COOH\] and \[-OCO{{C}_{2}}{{H}_{5}}\] number of chiral C - atoms in compound is [RPMT 2003]
  A)
  1 done clear
  B)
  2 done clear
  C)
  3 done clear
  D)
  4 done clear
  View Solution play_arrow

• question_answer117)
  Isomerism due to rotation round single bond of carbon-carbon is [UPSEAT 2003]
  A)
  Conformation done clear
  B)
  Enantiomerism done clear
  C)
  Diasterio isomerism done clear
  D)
  Position isomerism done clear
  View Solution play_arrow

• question_answer118)
  Which of the following pairs of compounds are enantiomers [CBSE PMT 2003]
  A)
  and done clear
  B)
  and done clear
  C)
  and done clear
  D)
  and  done clear
  View Solution play_arrow

• question_answer119)
  How many structures of F is possible [IIT-JEE (Screening) 2003]
  A)
  2 done clear
  B)
  5 done clear
  C)
  6 done clear
  D)
  3 done clear
  View Solution play_arrow

• question_answer120)
  An enantiomerically pure acid is treated with racemic mixture of an alcohol having one chiral carbon. The ester formed will be [IIT-JEE (Screening) 2003]
  A)
  Optically active mixture done clear
  B)
  Pure enantiomer done clear
  C)
  Meso compound done clear
  D)
  Racemic mixture done clear
  View Solution play_arrow

• question_answer121)
  Which one of the following will not show geometrical isomerism [MP PMT 2003]
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer122)
  Isomerism shown by \[C{{H}_{3}}-{{(C{{H}_{2}})}_{3}}-O-C{{H}_{3}}\] \[C{{H}_{3}}-C{{H}_{2}}-O-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\]\[C{{H}_{3}}-\underset{\underset{C{{H}_{3}}}{\mathop{|\,\,\,\,}}\,}{\mathop{CH}}\,-O-C{{H}_{2}}-C{{H}_{3}}\] is [RPMT 2003]
  A)
  Position isomerism done clear
  B)
  Chain isomerism done clear
  C)
  Metamerism done clear
  D)
  Optical isomerism done clear
  View Solution play_arrow

• question_answer123)
  A compound whose molecules are superimposable on their mirror images even through they contain an asymmetric carbon atom is called [Kerala (Med.) 2003]
  A)
  A meso compound done clear
  B)
  An erythro isomer done clear
  C)
  A threo isomer done clear
  D)
  a glycol done clear
  View Solution play_arrow

• question_answer124)
  Of the following, the compound possessing optical isomerism      [Kerala (Med.) 2003]
  A)
  \[C{{H}_{3}}C{{H}_{2}}OH\] done clear
  B)
  \[C{{H}_{3}}CHClBr\] done clear
  C)
  \[CC{{l}_{2}}BrF\] done clear
  D)
  \[CC{{l}_{2}}{{F}_{2}}\] done clear
  View Solution play_arrow

• question_answer125)
  Which of the following statement is wrong [EAMCET 2003]
  A)
  Diethyl ketone and methyl propyl ketone are position isomers done clear
  B)
  2-chloro pentane and 1-chloro pentane are position isomers done clear
  C)
  n-butane and 2-methyl propane are chain isomers done clear
  D)
  Acetone and propinaldehyde are functional isomers done clear
  View Solution play_arrow

• question_answer126)
  Dimethyl ether and ethyl alcohol are [MH CET 2004; Pb. CET 2002]
  A)
  Metamers done clear
  B)
  Homologues done clear
  C)
  Functional isomers done clear
  D)
  Position isomers done clear
  View Solution play_arrow

• question_answer127)
   The correct statement about the compounds A and B is [DCE 2002; UPSEAT 2004; IIT-JEE 1997; DPMT 2005]                                  
  A)
  A and B are identical done clear
  B)
  A and B are diastereomers done clear
  C)
  A and B are enantiomers done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer128)
  Ethyl acetoacetate shows, which type of isomerism [Pb. CET 2003]
  A)
  Chain done clear
  B)
  Optical done clear
  C)
  Metamerism done clear
  D)
  Tautomerism done clear
  View Solution play_arrow

• question_answer129)
  Which of the following will have a mesoisomer also [AIEEE 2004]
  A)
  2, 3-Dichloropentane done clear
  B)
  2, 3-Dichlorobutane done clear
  C)
  2-Chlorobutane done clear
  D)
   2-Hydroxypropanoic acid done clear
  View Solution play_arrow

• question_answer130)
  For which of the following parameters the structural isomers \[{{C}_{2}}{{H}_{5}}OH\] and \[C{{H}_{3}}OC{{H}_{3}}\] would be expected to have the same values ? (Assume ideal behaviour) [AIEEE 2004]
  A)
  Boiling points done clear
  B)
  Vapour pressure at the same temperature done clear
  C)
  Heat of vaporization done clear
  D)
  Gaseous densities at the same temperature and pressure done clear
  View Solution play_arrow

• question_answer131)
  The geometrical isomerism is shown by [AIIMS 2004]
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer132)
  Which of the following compounds will exhibit cis-trans isomerism [Kerala PMT 2004]
  A)
  2-butene done clear
  B)
  2-butyne done clear
  C)
  2-butanol done clear
  D)
  Butanone done clear
  E)
  Butanol done clear
  View Solution play_arrow

• question_answer133)
  Which of the following compounds exhibit stereoisomerism [MP PMT 2004]
  A)
  2-methyl-butane I done clear
  B)
  3-methyl-butanoic acid done clear
  C)
  3-methyl-butyne I done clear
  D)
  2-methyl butanoic acid done clear
  View Solution play_arrow

• question_answer134)
  The chirality of the compound [CBSE PMT 2005]
  A)
  R done clear
  B)
  S done clear
  C)
  Z done clear
  D)
  E done clear
  View Solution play_arrow

• question_answer135)
  Which of the following is most likely to show optical isomerism [UPSEAT 2004]
  A)
  \[HC\equiv C-\underset{Cl\,}{\overset{H\,}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,-}}}\,C\equiv CH\] done clear
  B)
  \[HC\equiv C-\underset{Cl}{\overset{H}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}}\,-C{{H}_{3}}\] done clear
  C)
  \[HC\equiv C-\underset{Cl}{\overset{H}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}}\,-H\] done clear
  D)
  \[HC\equiv C-\overset{Cl}{\mathop{\overset{|}{\mathop{C}}\,}}\,=C{{H}_{2}}\] done clear
  View Solution play_arrow

• question_answer136)
  Nitroethane can exhibit one of the following kind of isomerism [DCE 2004]
  A)
  Metamerism done clear
  B)
  Optical activity done clear
  C)
  Tautomerism done clear
  D)
  Position isomerism done clear
  View Solution play_arrow

• question_answer137)
  \[C{{H}_{3}}CH(OH).COOH\] shows [BVP 2004]
  A)
  Geometrical isomerism done clear
  B)
  Optical isomerism done clear
  C)
  Both done clear
  D)
  None done clear
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• question_answer138)
  Which will have enantiomer [BVP 2004]
  A)
  \[C{{H}_{3}}C{{H}_{2}}\underset{Cl\ }{\mathop{\underset{|}{\mathop{C}}\,H}}\,-C{{H}_{3}}\] done clear
  B)
  \[C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}Cl\] done clear
  C)
  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}CHC{{l}_{2}}\] done clear
  D)
  None done clear
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• question_answer139)
  The total number of acylic isomers including the stereoisomers with the molecular formula \[{{C}_{4}}{{H}_{7}}Cl\] [Pb. CET 2004]
  A)
  11 done clear
  B)
  12 done clear
  C)
  9 done clear
  D)
  10 done clear
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• question_answer140)
  The number of possible enantiomeric pairs that can be produced during mono-chlorination of 2-methylbutane is [Pb. CET 2004]
  A)
  3 done clear
  B)
  4 done clear
  C)
  1 done clear
  D)
  2 done clear
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• question_answer141)
  Which one of the following pairs represents stereoisomerism [CBSE PMT 2005]
  A)
  Chain isomerism and rotational isomerism done clear
  B)
  Structural isomerism and geometric isomerism done clear
  C)
  Linkage isomerism and geometric isomerism done clear
  D)
  Optical isomerism and geometric isomerism done clear
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• question_answer142)
  When isomers have the same structural formula but differ in relative arrangement of atoms or groups are called [CPMT 2000; KCET (Med.) 2000]
  A)
  Mesomers done clear
  B)
  Stereoisomers done clear
  C)
  Optical isomers done clear
  D)
  Geometrical mesomers done clear
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• question_answer143)
  \[C{{H}_{3}}C{{H}_{2}}CH=C{{H}_{2}}\] and \[C{{H}_{3}}-CH=CH-C{{H}_{3}}\] show
  A)
  Chain isomerism done clear
  B)
  Position isomerism done clear
  C)
  Functional isomerism done clear
  D)
  Metamerism done clear
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• question_answer144)
  The number of possible isomers of butene are [Kerala (Engg.) 2002]
  A)
  3 done clear
  B)
  2 done clear
  C)
  4 done clear
  D)
  5 done clear
  E)
  6 done clear
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• question_answer145)
  Which of the following show geometrical isomerism [BCECE 2005]
  A)
  \[{{C}_{2}}{{H}_{5}}Br\] done clear
  B)
  \[(C{{H}_{2}}){{(COOH)}_{2}}\] done clear
  C)
  \[{{(CH)}_{2}}{{(COOH)}_{2}}\] done clear
  D)
  \[{{C}_{2}}{{H}_{6}}\] done clear
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• question_answer146)
  Among the following the most stable compound is [AIIMS 2005]
  A)
  \[cis-1,2-cyclohexanediol\] done clear
  B)
  \[trans-1,2-cyclohexanediol\] done clear
  C)
  \[cis-1,3-cyclohexanediol\] done clear
  D)
  \[trans-1,3-cyclohexanediol\] done clear
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• question_answer147)
  Chirality of carbon compound is because of its [Kerala (Med.) 2002]
  A)
  Tetrahedral nature of carbon done clear
  B)
  Monovalent nature of carbon done clear
  C)
  Divalent nature of carbon done clear
  D)
  Trivalent nature of carbon done clear
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• question_answer148)
  Which kind of isomerism is possible for 1-chloro-2-nitroethene [J & K 2005]
  A)
  Functional group isomerism done clear
  B)
  Position isomerism done clear
  C)
  \[E/Z\] isomerism done clear
  D)
  Optical isomerism done clear
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• question_answer149)
  Which will give chiral molecule [DPMT 2005]
  A)
  \[C{{H}_{3}}COCl\xrightarrow{LiAl{{H}_{4}}}\] done clear
  B)
  \[{{C}_{2}}{{H}_{5}}CHO\underset{{{H}^{+}}/{{H}_{2}}O}{\mathop{\xrightarrow{C{{H}_{3}}MgBr}}}\,\] done clear
  C)
  \[{{(C{{H}_{3}})}_{2}}CH{{C}_{2}}{{H}_{5}}\xrightarrow{Cu}\] done clear
  D)
  \[\begin{matrix}    H  \\    {}  \\    C{{H}_{3}}  \\ \end{matrix}\,\,\,\,\,\,C=C\,\,\,\,\,\,\,\,\begin{matrix}    C{{H}_{3}}  \\    {}  \\    C{{H}_{3}}  \\ \end{matrix}\xrightarrow{C{{l}_{2}}}\] done clear
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• question_answer150)
  Which of the following will be chiral [J & K 2005]
  A)
  \[C{{H}_{3}}CHC{{l}_{2}}\] done clear
  B)
  \[C{{H}_{3}}CHBrCl\] done clear
  C)
  \[C{{D}_{2}}C{{l}_{_{2}}}\] done clear
  D)
  \[C{{H}_{2}}ClBr\] done clear
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• question_answer151)
  Which of the following Fischer projection formula is same as \[D\]-Glyceraldehyde [Kerala CET 2005]
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  E)
  done clear
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