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ISOMERS & PHYSICAL PROPERTIES of ALKENES & ALKYNES

Total questions: 15

Worksheet time: 30mins

Name
Class
Date
1.

The other name of structural isomer is...

a)

Chain isomer

b)

Constitutional isomer

c)

Configurational isomer

d)

Stereoisomer

e)

Metamerism

2.

Geometrical isomer is also known as...

a)

Chain isomer

b)

Constitutional isomer

c)

Configurational isomer

d)

Stereoisomer

e)

Metamerism

3.

Which of the following is NOT structural isomer?

a)

Chain isomer

b)

Position isomer

c)

Metamerism

d)

Optical isomer

e)

Tautomerism

4.

What are the names of the isomers of the following pairs of compounds?

a)

Chain isomer

b)

Position isomer

c)

Geometrical isomer

d)

Functional isomer

e)

Metamerism

5.

Which of the following is a pair of chain isomer?

a)
b)
c)
d)
e)
6.

Which of the following pairs of compounds have chain isomer and position isomer at the same time?

a)
b)
c)
d)
e)
7.

How many structural isomers are there in a compound with molecular formula C5H10?

a)

2

b)

3

c)

4

d)

5

e)

6

8.

How many structural isomers are there in a compound with moleular formula C5H8?

a)

2

b)

3

c)

4

d)

5

e)

6

9.

Which of the following compounds show geometrical isomer?

a)

CH3CH=CH2

b)

Cl2C=Cl2

c)

CH3-CH-CH=CH2

d)

CH3Cl=ClCH3

e)

F2C=CF2

10.

The suitable name of the following compound is...

a)

Cis-1-Bromo-1-Chloro-2-Fluoro-2-Iodoethene

b)

Trans-1-Bromo-1-Chloro-2-Fluoro-2-Iodoethene

c)

Z-1-Bromo-1-Chloro-2-Fluoro-2-Iodoethene

d)

E-1-Bromo-1-Chloro-2-Fluoro-2-Iodoethene

e)

Z-2-Bromo-2-Chloro-1-Fluoro-1-Iodoethene

11.

Which of the following compounds have the highest boiling point?

a)

Ethene

b)

Ethyne

c)

Propane

d)

Propene

e)

Propyne

12.

Arrange the following compounds from lowest to highest boiling point?

(1). Hex-1-ene

(2). Hex-1-yne

(3). 2-methylpent-1-ene

(4). n-Heptane

a)

3<1<2<4

b)

3<2<1<4

c)

1<3<2<4

d)

1<2<3<4

e)

4<2<1<3

13.

Why the density of alkane with the same of carbon atom is larger than alkene and alkyne?

a)

Alkane has the highest molecular mass

b)

Molecular size of alkane is lower than alkene and alkyne

c)

Alkane has the lowest van der walls force

d)

The electronegativity of alkane is lower than alkene and alkyne

e)

Alkane is not reactive

14.

Which of the following compound is a gas at rom temperature?

a)

n-Hexane

b)

Acetylene

c)

Pent-1-ene

d)

Cyclohexane

e)

Hept-1-yne

15.

Why alkynes are slightly polar than alkanes and alkenes?

a)

Alkynes have the smallest molecular mass

b)

The electronegativity of alkynes are higher than alkenes and alkynes

c)

Alkynes have the highest molecular size

d)

Alkynes have 1 pi bond and 2 sigma bond

e)

Van der walls force of alkynes are smaller than alkanes and alkenes

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