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Alkanes and alkenes

Total questions: 13

Worksheet time: 18mins

Name
Class
Date
1.

Which is the correct structure of 2,2,4-trimethylpentane

a)
b)
c)
d)
2.

Give IUPAC nomenclature for this compound

a)

2,7-dimethyl-5-ethyloctane

b)

5-ethyl-2,7-dimethyloctane

c)

2,7-dimethyl-3-ethyloctane

d)

4-ethyl-2,7-dimethyloctane

3.

What is a free radical?

a)

An electron donor

b)

An electron acceptor

c)

A species with an unpaired electron

d)

A proton donor

4.

Methane reacts with chlorine in a free radical substitution reaction. Which of these is an essential condition?

a)

An acid catalyst

b)

A low temperature

c)

UV light

d)

A low pressure

5.

What is the name of this molecule?

a)

Pent-1-ene

b)

Pent-2-ene

c)

Pent-5-ene

d)

Pent-4-ene

6.

Molecules with the same structural formula but a different spatial arrangement of atoms are:

a)

Isotopes

b)

Structural isomers

c)

Hydrocarbons

d)

Stereoisomers

7.

Which reagent is needed to change CH3CH=CH2 to CH3CHClCH3

a)

Cl2 (aq)

b)

SOCl2

c)

PCl3

d)

HCl

8.

Which of these alkenes can exist as E/Z (or cis-trans) isomers?

a)

But-1-ene

b)

But-2-ene

c)

Propene

d)

Methylpropene

9.

What is the name of the mechanism when ethene reacts with chlorine?

a)

Electrophilic substitution

b)

Electrophilic addition

c)

Free radical substitution

d)

Nucleophilic addition

10.

When HBr reacts with propene, what is the name of the major product?

a)

1-bromopropene

b)

2-bromopropene

c)

1-bromopropane

d)

2-bromopropane

11.

Which diagram shows the correct structure for a repeating unit of polypropene?

a)
b)
c)
d)
12.

But-1-ene reacts with steam in the presence of a concentrated acid catalyst. What is the major product formed?

a)

Butan-1-ol

b)

Butan-2-ol

c)

Butanone

d)

Butanal

13.

Cyclohexane has the molecular formula C6H12. Which of these molecules is a structural isomer?

a)

2-methylhexane

b)

2,2-dimethylhexane

c)

2-methylhex-1-ene

d)

hexa-1,5-diene