Types Of Isomers -Multiple Choice Questions Quiz

Question 1: What type of isomers have the same molecular formula but different connectivity of atoms in their structures?

(a) Conformational isomers
(b) Stereoisomers
(c) Structural isomers
(d) Optical isomers

Question 2: What is the term for isomers that have the same molecular formula, same connectivity of atoms, but differ in their spatial arrangement?

(a) Conformational isomers
(b) Geometric isomers
(c) Structural isomers
(d) Optical isomers

Question 3: Which type of isomers are mirror images of each other and cannot be superimposed onto one another?

(a) Conformational isomers
(b) Geometric isomers
(c) Structural isomers
(d) Optical isomers

Question 4: What term is used for isomers that have the same molecular formula and the same connectivity but different spatial arrangements due to the rotation around single bonds?

(a) Conformational isomers
(b) Geometric isomers
(c) Structural isomers
(d) Optical isomers

Question 5: Which type of isomers have different arrangements of substituents around a chiral center, resulting in different configurations?

(a) Conformational isomers
(b) Geometric isomers
(c) Structural isomers
(d) Optical isomers

Question 6: What type of isomers have different arrangements of atoms in a cyclic compound?

(a) Conformational isomers
(b) Geometric isomers
(c) Structural isomers
(d) Optical isomers

Question 7: What is the main difference between cis-trans isomers and enantiomers?

(a) Cis-trans isomers have different connectivity, while enantiomers have the same connectivity.
(b) Cis-trans isomers have different spatial arrangements, while enantiomers have the same spatial arrangements.
(c) Cis-trans isomers are mirror images of each other, while enantiomers are not.
(d) Cis-trans isomers cannot rotate around single bonds, while enantiomers can.

Question 8: What is the term for isomers that have the same connectivity and spatial arrangements but differ in the way atoms are arranged in space?

(a) Conformational isomers
(b) Geometric isomers
(c) Stereoisomers
(d) Optical isomers

Question 9: Which type of isomers are usually not interconvertible through rotation around single bonds?

(a) Conformational isomers
(b) Geometric isomers
(c) Structural isomers
(d) Optical isomers

Question 10: How many chiral centers are present in a molecule that can exhibit optical isomerism?

(a) None
(b) One
(c) Two
(d) More than two

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Total score: /10

Answer key:

Question 1: c

Question 2: b

Question 3: d

Question 4: a

Question 5: d

Question 6: a

Question 7: b

Question 8: c

Question 9: b

Question 10: b