Stereochemistry MCQs [Organic Chemistry]

By: Prof. Dr. Fazal Rehman | Last updated: May 23, 2025

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1. : Cis-2-Butene on reaction with bromine gives 2,3-dibromobutane which is





2. : How many stereoisomers are possible for CH3CH=CHCHCH(Br)CH3?





3. : Process of separating the racemic mixture into optically active isomers is famous as





4. : Lactic acid is a molecule which shows





5. : Different arrangements of groups in space which can be converted into one another by rotation around a single bond are known as _____.





6. : Stereoisomers not related to each other as object and mirror image are known as





7. : Stereoisomers that can be interconverted by rotation about a single bond are known as _____.





8. : Geometrical isomerism emerges due to which reason?





9. : In E-Z nomenclature of stereoisomers, E will be assigned to





10. : In optical isomerism





11. : Geometrical isomerism can be exhibited by compounds having _____.




12. : Which of the mentioned molecules can exhibit geometrical isomerism?





13. : How many optical isomers are possible for CH(OH)COOH CH—(Br) COOH?





14. : Which of the mentioned property has a higher value for trans-isomer as compared to cis-isomer?





15. : Which configuration has lowest potential energy?





16. : D(+) glyceraldehyde has the absolute configuration





17. : According to R, S system the correct order of priority of the following groups is

19. : Which of the mentioned compounds shows tautomerism?





20. : 2-Butanol is optically active because it contains





21. : Which of the mentioned compound will be optically active?





22. : What is the possible number of optical isomers for a compound containing 2 dissimilar asymmetric carbon atoms?





23. : Which of the mentioned statements is wrong about enantiomers?





24. : Enantiomers have __________ characteristics?





25. : It is possible to distinguish between optical isomers





26. : Plane polarized light is affected by





27. : A molecule is said to be chiral if it __________.





28. : An optically active compound _____.





29. : Maleic acid and fumaric acid are_____.





30. : Which of the mentioned are structural isomers?





31. : n-Butane and 2-methylpropane are examples of ______.





32. : 1-Propanol and 2-propanol are examples of____.





33. : Acetone and diethyl ether are examples of





34. : Compounds HCN and HNC are _____.





35. : Alkyl cyanide and alkyl isocyanides are _____.





36. : Several compounds corresponding to molecular formula C4H10 are _____.





37. : The device which is helpful and used to measure the optical activity is known as





38. : In Relative Configuration D & L are assigned __________.





39. : Epimers are the stereoisomer of compound which





40. : In relative stability of conformational isomers of n-butane





41. : Which of the mentioned compounds show optical activity?





42. : Stereoisomers that are related like an object and its mirror image non-super imposable are known as





43. : The configuration of a compound with reference to the arbitrarily assigned configuration is known as





44. : An equimolar mixture of a pair of enantiomers is known as





45. : Which of the mentioned is an element of symmetry?





46. : Which of the mentioned methods is helpful and used for resolution of racemic mixture?





47. : The functional isomers of ether are





48. : The least cyclohexane is stable





49. : Which of the mentioned molecules can exhibit geometrical isomerism?





50. : Stereoisomers not related to each other as object and mirror image are known as





51. : Asymmetric center is characterized by which of the following?





52. : Which statement is true regarding Optical activity?





53. : Chiral compounds are _______ forever





54. : Examples of ______ are Diethyl ether and methyl propyl ether.





55. : Which is not a type of stereoisomer?





56. : Two structural isomers which differ in the relative positions of their atoms and are readily interconvertible are known as





57. : Isomers that have the same structural formula but differ in the arrangement of atoms in the three dimensional space are known as __.





58. : Benzene has





59. : Asymmetric carbon is that





60. : Enantiomers are the stereoisomers which





61. : What is the formula for calculation of Number of stereoisomers?





62. : Stereochemistry studies the compound





63. : The energy difference between staggered and eclipsed conformation of ethane is





64. : What is the total number of conformations of ethane?





65. : What is the energy difference between boat and chair conformation of cyclohexane?





66. : Various compounds corresponding molecular formula C4H10 are ______.





67. : Which of the mentioned methods helpful and used for the determination of configuration of geometrical isomers?





68. : Anthracene is isomeric with which of the following?





 

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