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MCQOPTIONS
This section includes 11242 Mcqs, each offering curated multiple-choice questions to sharpen your Joint Entrance Exam - Main (JEE Main) knowledge and support exam preparation. Choose a topic below to get started.
| 10751. |
Glucose and fructose are [AMU (Engg.) 1999] |
| A. | Optical isomers |
| B. | Functional isomers |
| C. | Position isomers |
| D. | Chain isomers |
| Answer» C. Position isomers | |
| 10752. |
Cyanide and isocyanide are isomers of type [AFMC 1997] |
| A. | Positional |
| B. | Functional |
| C. | Tautomer |
| D. | Structural |
| Answer» C. Tautomer | |
| 10753. |
Which one of the following is the chiral molecule [BHU 1998; 2005] |
| A. | \[C{{H}_{3}}Cl\] |
| B. | \[C{{H}_{2}}C{{l}_{2}}\] |
| C. | \[CHB{{r}_{3}}\] |
| D. | \[CHClBrI\] |
| Answer» E. | |
| 10754. |
Which compound does not show geometrical isomerism [RPMT 1997] |
| A. | 2-butene |
| B. | 2-pentene |
| C. | 2,3-dibromo-2-butene |
| D. | 2-methyl propene |
| Answer» E. | |
| 10755. |
Which of the following cannot be given to exemplify chiral structure [JIPMER 1997] |
| A. | A shoe |
| B. | A screw |
| C. | A screw driver |
| D. | All of these |
| Answer» E. | |
| 10756. |
Which of the following is expected to be optically active [JIPMER 1997] |
| A. | \[{{(C{{H}_{3}})}_{4}}C\] |
| B. | \[{{C}_{2}}{{H}_{5}}CH(C{{H}_{3}}){{C}_{3}}{{H}_{7}}\] |
| C. | \[{{({{C}_{2}}{{H}_{5}})}_{2}}CHC{{H}_{3}}\] |
| D. | \[C{{H}_{3}}CH=CHC{{H}_{3}}\] |
| Answer» C. \[{{({{C}_{2}}{{H}_{5}})}_{2}}CHC{{H}_{3}}\] | |
| 10757. |
Functional isomerism is exhibited by the following pair of compounds |
| A. | Acetone, propionaldehyde |
| B. | Diethyl ether, methyl propyl ether |
| C. | Butane, isobutane |
| D. | 1-butene, 2-butene |
| Answer» B. Diethyl ether, methyl propyl ether | |
| 10758. |
Which of the following pairs are not isomeric compounds |
| A. | Ethyl ethanoate and methyl propanoate |
| B. | Butanone and butanal |
| C. | Ethoxy propane and propoxy ethane |
| D. | Methoxy methane and ethanol |
| Answer» D. Methoxy methane and ethanol | |
| 10759. |
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 |
| B. | Functional isomerism |
| C. | Positional isomerism |
| D. | Chain isomerism |
| Answer» C. Positional isomerism | |
| 10760. |
n-propyl alcohol and isopropyl alcohol are examples of [MP PMT 1994] |
| A. | Position isomerism |
| B. | Chain isomerism |
| C. | Tautomerism |
| D. | Geometrical isomerism |
| Answer» B. Chain isomerism | |
| 10761. |
Diethyl ether is not associated with which one of these isomers [AFMC 1993] |
| A. | Butanoic acid |
| B. | Methyl propionate |
| C. | Steroisomerism |
| D. | None of these |
| Answer» E. | |
| 10762. |
Diethyl ether and methyl n-propyl ether are [MP PET 1994; AFMC 1999; MP PMT 2002] |
| A. | Position isomers |
| B. | Functional isomers |
| C. | Metamers |
| D. | Chain isomers |
| Answer» D. Chain isomers | |
| 10763. |
Which one of the following pairs represents the stereoisomerism [AIIMS 1992] |
| A. | Geometrical isomerism, position isomerism |
| B. | Geometrical isomerism, conformational isomerism |
| C. | Optical isomerism, geometrical isomerism |
| D. | Optical isomerism, metamerism |
| Answer» D. Optical isomerism, metamerism | |
| 10764. |
The maximum number of stereoisomers possible for 2-hydroxy-2-methyl butanoic acid is [Roorkee 1992] |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 10765. |
Which of the following compounds exhibits optical isomerism [BHU 1983; AFMC 1990; CPMT 1993; MP PMT 1999, 2000] |
| A. | \[C{{H}_{3}}C{{H}_{2}}COOH\] |
| B. | \[C{{H}_{3}}CHOHCOOH\] |
| C. | \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}OH\] |
| D. | \[C{{H}_{3}}CHOHC{{H}_{3}}\] |
| Answer» C. \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}OH\] | |
| 10766. |
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 |
| B. | 3 |
| C. | 2 |
| D. | 5 |
| Answer» B. 3 | |
| 10767. |
Which of the following can exhibit cis-trans isomerism [CBSE PMT 1989] |
| A. | HC \[\equiv \] CH |
| B. | ClCH = CHCl |
| C. | \[C{{H}_{3}}.CHCl.COOH\] |
| D. | \[ClC{{H}_{2}}-C{{H}_{2}}Cl\] |
| Answer» C. \[C{{H}_{3}}.CHCl.COOH\] | |
| 10768. |
How many isomers are possible for \[{{C}_{4}}{{H}_{8}}O\] [MNR 1992; UPSEAT 2001, 02] |
| A. | 3 |
| B. | 4 |
| C. | 5 |
| D. | 6 |
| Answer» E. | |
| 10769. |
Rotation of plane polarised light is measured by [CPMT 1985; DCE 2001] |
| A. | Manometer |
| B. | Polari meter |
| C. | Viscometer |
| D. | Refractometer |
| Answer» C. Viscometer | |
| 10770. |
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 |
| B. | 3 |
| C. | 4 |
| D. | 6 |
| Answer» E. | |
| 10771. |
Which one of the following exhibits geometrical isomerism [NCERT 1979; DPMT 1984; CBSE PMT 1990] |
| A. | \[\begin{matrix} \ \ \ \ H \\ {{H}_{3}}C \\ \end{matrix}>C=C<\begin{matrix} H\ \ \ \\ C{{H}_{3}} \\ \end{matrix}\] |
| B. | \[\begin{matrix} {{C}_{2}}H \\ \,\,\,\ H \\ \end{matrix}>C=C<\begin{matrix} H \\ H \\ \end{matrix}\] |
| C. | \[\begin{matrix} C{{H}_{3}} \\ C{{H}_{3}} \\ \end{matrix}>C=C<\begin{matrix} H \\ H \\ \end{matrix}\] |
| D. | \[H-\overset{C{{H}_{3}}}{\mathop{\underset{H}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}\,\ -}}\,\underset{H}{\mathop{\underset{|}{\mathop{C}}\,}}\,=C<\begin{matrix} H \\ H \\ \end{matrix}\] |
| Answer» B. \[\begin{matrix} {{C}_{2}}H \\ \,\,\,\ H \\ \end{matrix}>C=C<\begin{matrix} H \\ H \\ \end{matrix}\] | |
| 10772. |
An organic compound exhibits optical isomerism when [CPMT 1971, 78, 81; MP PET 1999] |
| A. | Four groups linked to carbon atom are different |
| B. | Three groups linked to carbon atom are different |
| C. | Two groups linked to carbon atom are different |
| D. | All the groups linked to carbon atom are same |
| Answer» B. Three groups linked to carbon atom are different | |
| 10773. |
Geometrical isomerism is shown by [IIT-JEE 1983; CPMT 1990, 94; CBSE PMT 1992; MP PET 1997; AMU (Engg.) 1999] |
| A. | 2-butene |
| B. | 2-butyne |
| C. | 2-butanol |
| D. | Butanal |
| Answer» B. 2-butyne | |
| 10774. |
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 \[C{{H}_{3}}-\underset{C{{H}_{3}}\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,}{\mathop{CH-}}\,}}\,C{{H}_{3}}\] |
| B. | \[C{{H}_{3}}-C{{H}_{2}}-CH=C{{H}_{2}}\] and \[C{{H}_{3}}-CH=CH-C{{H}_{3}}\] |
| C. | \[C{{H}_{3}}-C{{H}_{2}}OH\] and \[C{{H}_{3}}-O-C{{H}_{3}}\] |
| D. | \[C{{H}_{3}}-\underset{C{{H}_{3}}\,\,\,\,\,\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{\overset{C{{H}_{3}}\,\,\,\,\,\,\,\,}{\mathop{\overset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{C-C{{H}_{3}}\,}}\,}}\,}}\,}}\,\]and\[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\] |
| Answer» C. \[C{{H}_{3}}-C{{H}_{2}}OH\] and \[C{{H}_{3}}-O-C{{H}_{3}}\] | |
| 10775. |
Which gives difference between aldehyde and ketone [CPMT 1994] |
| A. | Fehling's solution |
| B. | Tollen's reagent |
| C. | Schiff's reagent |
| D. | Benedict's solution |
| Answer» E. | |
| 10776. |
The isomer of diethyl ether is [CPMT 1975] |
| A. | \[{{(C{{H}_{3}})}_{2}}CHOH\] |
| B. | \[{{(C{{H}_{3}})}_{3}}C-OH\] |
| C. | \[{{C}_{3}}{{H}_{7}}OH\] |
| D. | \[{{({{C}_{2}}{{H}_{5}})}_{2}}CHOH\] |
| Answer» C. \[{{C}_{3}}{{H}_{7}}OH\] | |
| 10777. |
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 \[\underset{C}{\mathop{\underset{|}{\mathop{\overset{C}{\mathop{\overset{|}{\mathop{C-C-C}}\,}}\,}}\,}}\,\] |
| B. | \[\underset{C}{\mathop{\underset{|}{\mathop{\overset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C}{\mathop{\overset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|}{\mathop{C-C-C}}\,}}\,}}\,}}\,\] and \[\underset{C}{\mathop{\underset{|}{\mathop{\overset{C\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{\overset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{C-C-C}}\,}}\,}}\,}}\,\] |
| C. | \[\begin{matrix} C \\ C \\ \end{matrix}>C-C-C\] and \[\underset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C}{\mathop{\underset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|}{\mathop{\overset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,C}{\mathop{\overset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|}{\mathop{C-C-C}}\,}}\,}}\,}}\,\] |
| D. | \[C-C-C-C\] and \[\underset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C}{\mathop{\underset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|}{\mathop{C-C-C}}\,}}\,\] |
| Answer» B. \[\underset{C}{\mathop{\underset{|}{\mathop{\overset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C}{\mathop{\overset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|}{\mathop{C-C-C}}\,}}\,}}\,}}\,\] and \[\underset{C}{\mathop{\underset{|}{\mathop{\overset{C\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{\overset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{C-C-C}}\,}}\,}}\,}}\,\] | |
| 10778. |
Only two isomers of monochloro product is possible of [IIT-JEE 1986] |
| A. | n-butane |
| B. | 2,4-dimethyl pentane |
| C. | Benzene |
| D. | 1-methyl propane |
| Answer» B. 2,4-dimethyl pentane | |
| 10779. |
Among the following the most stable compound is [AIIMS 2005] |
| A. | \[cis-1,2-cyclohexanediol\] |
| B. | \[trans-1,2-cyclohexanediol\] |
| C. | \[cis-1,3-cyclohexanediol\] |
| D. | \[trans-1,3-cyclohexanediol\] |
| Answer» E. | |
| 10780. |
Chirality of carbon compound is because of its [Kerala (Med.) 2002] |
| A. | Tetrahedral nature of carbon |
| B. | Monovalent nature of carbon |
| C. | Divalent nature of carbon |
| D. | Trivalent nature of carbon |
| Answer» B. Monovalent nature of carbon | |
| 10781. |
Which of the following show geometrical isomerism [BCECE 2005] |
| A. | \[{{C}_{2}}{{H}_{5}}Br\] |
| B. | \[(C{{H}_{2}}){{(COOH)}_{2}}\] |
| C. | \[{{(CH)}_{2}}{{(COOH)}_{2}}\] |
| D. | \[{{C}_{2}}{{H}_{6}}\] |
| Answer» D. \[{{C}_{2}}{{H}_{6}}\] | |
| 10782. |
Total number of isomers of a disubstituted benzene compound is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 10783. |
Which one of the following objects is ?achiral? |
| A. | Letter P |
| B. | Letter F |
| C. | Ball |
| D. | A pair of hand |
| Answer» D. A pair of hand | |
| 10784. |
The total number of acylic isomers including the stereoisomers with the molecular formula \[{{C}_{4}}{{H}_{7}}Cl\] [Pb. CET 2004] |
| A. | 11 |
| B. | 12 |
| C. | 9 |
| D. | 10 |
| Answer» C. 9 | |
| 10785. |
Which one of the following compounds shows optical isomerism [MP PET 1990] |
| A. | \[C{{H}_{3}}CHCl-C{{H}_{2}}-C{{H}_{3}}\] |
| B. | \[C{{H}_{3}}-C{{H}_{2}}-CHCl-C{{H}_{2}}-C{{H}_{3}}\] |
| C. | \[ClC{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\] |
| D. | \[ClC{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\] |
| Answer» B. \[C{{H}_{3}}-C{{H}_{2}}-CHCl-C{{H}_{2}}-C{{H}_{3}}\] | |
| 10786. |
\[C{{H}_{3}}CH(OH).COOH\] shows [BVP 2004] |
| A. | Geometrical isomerism |
| B. | Optical isomerism |
| C. | Both |
| D. | None |
| Answer» C. Both | |
| 10787. |
Which will have enantiomer [BVP 2004] |
| A. | \[C{{H}_{3}}C{{H}_{2}}\underset{Cl\ }{\mathop{\underset{|}{\mathop{C}}\,H}}\,-C{{H}_{3}}\] |
| B. | \[C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}Cl\] |
| C. | \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}CHC{{l}_{2}}\] |
| D. | None |
| Answer» B. \[C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}Cl\] | |
| 10788. |
The chirality of the compound [CBSE PMT 2005] |
| A. | R |
| B. | S |
| C. | Z |
| D. | E |
| Answer» B. S | |
| 10789. |
Which of the following compounds exhibit stereoisomerism [MP PMT 2004] |
| A. | 2-methyl-butane I |
| B. | 3-methyl-butanoic acid |
| C. | 3-methyl-butyne I |
| D. | 2-methyl butanoic acid |
| Answer» E. | |
| 10790. |
Which of the following compounds will exhibit cis-trans isomerism [Kerala PMT 2004] |
| A. | 2-butene |
| B. | 2-butyne |
| C. | 2-butanol |
| D. | Butanone |
| Answer» B. 2-butyne | |
| 10791. |
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 |
| B. | Vapour pressure at the same temperature |
| C. | Heat of vaporization |
| D. | Gaseous densities at the same temperature and pressure |
| Answer» E. | |
| 10792. |
Which of the following will have a mesoisomer also [AIEEE 2004] |
| A. | 2, 3-Dichloropentane |
| B. | 2, 3-Dichlorobutane |
| C. | 2-Chlorobutane |
| D. | 2-Hydroxypropanoic acid |
| Answer» C. 2-Chlorobutane | |
| 10793. |
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 |
| B. | An erythro isomer |
| C. | A threo isomer |
| D. | a glycol |
| Answer» B. An erythro isomer | |
| 10794. |
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 |
| B. | Chain isomerism |
| C. | Metamerism |
| D. | Optical isomerism |
| Answer» D. Optical isomerism | |
| 10795. |
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 |
| B. | Pure enantiomer |
| C. | Meso compound |
| D. | Racemic mixture |
| Answer» E. | |
| 10796. |
How many structures of F is possible [IIT-JEE (Screening) 2003] |
| A. | 2 |
| B. | 5 |
| C. | 6 |
| D. | 3 |
| Answer» B. 5 | |
| 10797. |
Which of the following pairs of compounds are enantiomers [CBSE PMT 2003] |
| A. | and |
| B. | and |
| C. | and |
| D. | and |
| Answer» C. and | |
| 10798. |
Which of the following is an chiral compound [AIIMS 2002] |
| A. | Hexane |
| B. | Methane |
| C. | n-butane |
| D. | 2,3,4-trimethyl hexane |
| Answer» E. | |
| 10799. |
Which of the following hydride is capable of showing conformations [JIPMER 2002] |
| A. | \[N{{H}_{2}}-N{{H}_{2}}\] |
| B. | \[{{B}_{2}}{{H}_{6}}\]ssss |
| C. | \[C{{H}_{4}}\] |
| D. | None of these |
| Answer» B. \[{{B}_{2}}{{H}_{6}}\]ssss | |
| 10800. |
Geometrical isomers differ in [CBSE PMT 2002] |
| A. | Position of atoms |
| B. | Length of carbon |
| C. | Spatial arrangement of atoms |
| D. | Position of functional group |
| Answer» D. Position of functional group | |