Organic Chemistry Test

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Organic Chemistry Test - 15

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Weekly Quiz Competition

Question 1
4 / -1

Methoxy methane and ethanol are

A
position isomers

B
chain isomers

C
functional isomers

D
optical isomers
Question 2
4 / -1

Which of the following will exhibit cis-trans isomerism?

A
CH₂ Br — CH2₂ Br

B
CBr₃— CH₃

C
CHBr = CHBr

D
CBr₂ = CH₂
Question 3
4 / -1

How many primary amines are possible with the formula C₄H₁₁N?

A
1

B
2

C
3

D
4

Solution
Question 4
4 / -1

Which one of the following monoenes does not exhibit geometric isomerism

A
C₄ H₈

B
C₃ H₆

C
C₅ H₁₀

D
C₈H₁₆

Solution
Question 5
4 / -1

Which of the following will have a meso-isomer also ?

A
2-dichlorobutane

B
2, 3-dichlorobutane

C
2, 3-dichloropentane

D
2-hydroxypropanic acid

Solution
Question 6
4 / -1

n-pentane, iso-pentane and neo-pentane are examples for isomers of the type

A
geometrical

B
optical

C
chain

D
positional

Solution
Question 7
4 / -1

Different structures generated due to rotation about, C—C axis, of an organic molecule, are examples of

A
geometrical isomerism

B
conformational isomerism

C
optical isomerism

D
structural isomerism
Question 8
4 / -1

For which of the following parameters the structural isomers C₂ H₅ OH and CH₃ OCH₃ would be expected to have the same values? (Assume ideal behaviour)

A
Heat of vaporisation

B
Vapour pressure at the same temperature

C
Boiling points

D
Gaseous densities at the same temperature and pressure
Question 9
4 / -1

Increasing order of stability among the three main conformations, (i.e. Eclipse, Anti, Gauche) of 2-fluoroethanol is

A
Eclipse, Gauche, Anti

B
Gauche, Eclipse, Anti

C
Eclipse, Anti, Gauche

D
Anti, Gauche, Eclipse
Question 10
4 / -1

How many asymmetric carbon atoms are present in
I. 1,2-dimethylcyclohexane
II. 3-methylcyclopentane and
III. 3-methylcyclohexene ?

A
Two, one, one

B
One, one, one

C
Two, none , two

D
Two, none, one

Solution

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Organic Chemistry Test - 15

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Organic Chemistry Test - 15

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Question 1

position isomers

chain isomers

functional isomers

optical isomers

Question 2

CH2 Br — CH22 Br

CBr3— CH3

CHBr = CHBr

CBr2 = CH2

Question 3

1

2

3

4

Solution

Question 4

C4 H8

C3 H6

C5 H10

C8H16

Solution

Question 5

2-dichlorobutane

2, 3-dichlorobutane

2, 3-dichloropentane

2-hydroxypropanic acid

Solution

Question 6

geometrical

optical

chain

positional

Solution

Question 7

geometrical isomerism

conformational isomerism

optical isomerism

structural isomerism

Question 8

Heat of vaporisation

Vapour pressure at the same temperature

Boiling points

Gaseous densities at the same temperature and pressure

Question 9

Eclipse, Gauche, Anti

Gauche, Eclipse, Anti

Eclipse, Anti, Gauche

Anti, Gauche, Eclipse

Question 10

Two, one, one

One, one, one

Two, none , two

Two, none, one

Solution

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CH₂ Br — CH2₂ Br

CBr₃— CH₃

CBr₂ = CH₂

C₄ H₈

C₃ H₆

C₅ H₁₀

C₈H₁₆