CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317603
Assertion : 6,6'- Dinitrodiphenic acid shows enantiomerism. Reason : Enantiomers rotate the plane of polarised light in the opposite direction but to the same extent.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
6,6'-Dinitrodiphenic acid has steric hindrance between the bulky \({\text{o}}\)-substituents on the benzene rings. This forces the benzene rings to be perpendicular to each other. As a result two \({\text{o}}\)-substituents in one benzene ring lie in the plane of the paper while the two \({\text{o}}\)- substituents in the other benzene ring lie in a plane perpendicular to the plane of the paper. So, its mirror image is non-superimposable and hence shows enantiomerism. So, the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317604
How many asymmetric carbon atoms are present in (i) 1, 2-dimethyl cyclohexane (ii) 3-methyl cyclopentene (iii) 3-methyl cyclohexene?
1 Two, one, one
2 One, one, one
3 Two, none, two
4 Two, none, one
Explanation:
Conceptual Questions
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317605
Meso isomers are possible when the organic compound contains
1 One asymmetric carbon
2 Two or more dissimilar asymmetric carbons
3 Similar asymmetric carbons
4 Unsaturation
Explanation:
Meso isomers contains similar asymmetric carbons
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317626 I and II are
1 enantiomers
2 diastereomers
3 meso compound
4 identical
Explanation:
Since, it is a pair of optical isomers which are related as non-superimposable mirror images of each other, therefore (I) and (II) are enantiomers.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317603
Assertion : 6,6'- Dinitrodiphenic acid shows enantiomerism. Reason : Enantiomers rotate the plane of polarised light in the opposite direction but to the same extent.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
6,6'-Dinitrodiphenic acid has steric hindrance between the bulky \({\text{o}}\)-substituents on the benzene rings. This forces the benzene rings to be perpendicular to each other. As a result two \({\text{o}}\)-substituents in one benzene ring lie in the plane of the paper while the two \({\text{o}}\)- substituents in the other benzene ring lie in a plane perpendicular to the plane of the paper. So, its mirror image is non-superimposable and hence shows enantiomerism. So, the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317604
How many asymmetric carbon atoms are present in (i) 1, 2-dimethyl cyclohexane (ii) 3-methyl cyclopentene (iii) 3-methyl cyclohexene?
1 Two, one, one
2 One, one, one
3 Two, none, two
4 Two, none, one
Explanation:
Conceptual Questions
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317605
Meso isomers are possible when the organic compound contains
1 One asymmetric carbon
2 Two or more dissimilar asymmetric carbons
3 Similar asymmetric carbons
4 Unsaturation
Explanation:
Meso isomers contains similar asymmetric carbons
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317626 I and II are
1 enantiomers
2 diastereomers
3 meso compound
4 identical
Explanation:
Since, it is a pair of optical isomers which are related as non-superimposable mirror images of each other, therefore (I) and (II) are enantiomers.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317603
Assertion : 6,6'- Dinitrodiphenic acid shows enantiomerism. Reason : Enantiomers rotate the plane of polarised light in the opposite direction but to the same extent.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
6,6'-Dinitrodiphenic acid has steric hindrance between the bulky \({\text{o}}\)-substituents on the benzene rings. This forces the benzene rings to be perpendicular to each other. As a result two \({\text{o}}\)-substituents in one benzene ring lie in the plane of the paper while the two \({\text{o}}\)- substituents in the other benzene ring lie in a plane perpendicular to the plane of the paper. So, its mirror image is non-superimposable and hence shows enantiomerism. So, the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317604
How many asymmetric carbon atoms are present in (i) 1, 2-dimethyl cyclohexane (ii) 3-methyl cyclopentene (iii) 3-methyl cyclohexene?
1 Two, one, one
2 One, one, one
3 Two, none, two
4 Two, none, one
Explanation:
Conceptual Questions
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317605
Meso isomers are possible when the organic compound contains
1 One asymmetric carbon
2 Two or more dissimilar asymmetric carbons
3 Similar asymmetric carbons
4 Unsaturation
Explanation:
Meso isomers contains similar asymmetric carbons
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317626 I and II are
1 enantiomers
2 diastereomers
3 meso compound
4 identical
Explanation:
Since, it is a pair of optical isomers which are related as non-superimposable mirror images of each other, therefore (I) and (II) are enantiomers.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317603
Assertion : 6,6'- Dinitrodiphenic acid shows enantiomerism. Reason : Enantiomers rotate the plane of polarised light in the opposite direction but to the same extent.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
6,6'-Dinitrodiphenic acid has steric hindrance between the bulky \({\text{o}}\)-substituents on the benzene rings. This forces the benzene rings to be perpendicular to each other. As a result two \({\text{o}}\)-substituents in one benzene ring lie in the plane of the paper while the two \({\text{o}}\)- substituents in the other benzene ring lie in a plane perpendicular to the plane of the paper. So, its mirror image is non-superimposable and hence shows enantiomerism. So, the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317604
How many asymmetric carbon atoms are present in (i) 1, 2-dimethyl cyclohexane (ii) 3-methyl cyclopentene (iii) 3-methyl cyclohexene?
1 Two, one, one
2 One, one, one
3 Two, none, two
4 Two, none, one
Explanation:
Conceptual Questions
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317605
Meso isomers are possible when the organic compound contains
1 One asymmetric carbon
2 Two or more dissimilar asymmetric carbons
3 Similar asymmetric carbons
4 Unsaturation
Explanation:
Meso isomers contains similar asymmetric carbons
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317626 I and II are
1 enantiomers
2 diastereomers
3 meso compound
4 identical
Explanation:
Since, it is a pair of optical isomers which are related as non-superimposable mirror images of each other, therefore (I) and (II) are enantiomers.
