WorksheetsSTEREO ISOMERISM
Total questions: 15
Worksheet time: 8mins
Optical activity is measured by
Refractometer
Tracer technique
Spectrograph
Polarimeter
The number of optically active isomers of tartaric acid is
2
3
4
1
An organic molecule necessarily shows optical activity if it
Is non-superimposable on its mirror image
Is superimposable on its mirror image
Contains asymmetric carbon atoms
Is non-polaR
How many stereoisomers are there for tartaric acid?
3
4
5
0
The number of enantiomers of the compound
CH3- CH(Br)- CH(Br)COOH is
1
2
3
4
A similarity between optical and geometrical isomerism is that
If in a compound, one is present then so is the other
Each forms equal number of isomers for a given compound
Both are included in stereoisomerism
They have no similarly
(+)–mandelic acid has a specific rotation of +158°. What would be the observed specific rotation of a mixture containing 25 % (–)-mandelic acid and 75 % (+)-mandelic acid?
+ 79°
–118.5°
-79°
+18.5°
Among the following, the most stable compound is
Cis-1, 2-cyclohexanediol
Trans-1, 2-cyclohexanediol
Cis-1, 3-cyclohexenediol
Trans-1,3-cyclohexanediol
The number of geometrical isomers of CH3 CH=CH–CH=CH–CH=CH Cl are
4
6
8
10
Which of the following is optically active?
Butane
2-methylpentane
4-methylpentane
3-methylheptane
Racemic mixture is formed by mixing two
Isomeric compounds
Chiral compounds
Meso compounds
Enantiomers with chiral carbon
The two optical isomers given below, namely
Enantiomers
Geometrical isomers
Structural isomers
Diastereomers
The given compound can exhibit
Geometrical isomerism
Optical isomerism
Geometrical and optical isomerism
Conformational isomerism
The total number of optically active isomers for CH2 OH(CHOH)3 CHO are
16
8
4
2
Which of the following have asymmetric carbon atoms?
1. ClCH2 – CH2 Br
2. CH3 – CHCl2
3. CH3 – CHDCl
4. CH2 Br – CHOH – CH3
1, 2, 3
1, 2, 3
2,3
3,4
