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STEREO ISOMERISM

Authored by Helen Jayanthi

Chemistry

11th - 12th Grade

Used 134+ times

STEREO ISOMERISM
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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Optical activity is measured by

Refractometer

Tracer technique

Spectrograph

Polarimeter

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The number of optically active isomers of tartaric acid is

2

3

4

1

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many stereoisomers are there for tartaric acid?

3

4

5

0

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The number of enantiomers of the compound

CH3- CH(Br)- CH(Br)COOH is

1

2

3

4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

(+)–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°

Answer explanation

Specific rotation of the mixture = (75/100) (+158°) + (25/100) (–158°) = +79°

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