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Alkanes

Total questions: 26

Worksheet time: 22mins

Name
Class
Date
1.
How many carbon atoms are in methane?
a)
1
b)
2
c)
3
d)
4
2.
How many carbon atoms are in propane
a)
1
b)
2
c)
3
d)
4
3.
Give the name of this compound...
C3H8
a)
Propene
b)
Butane
c)
Butene
d)
Propane
4.
How many hydrogen atoms are in butane
a)
4
b)
6
c)
8
d)
10
5.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
6.
Methyl has the molecular formula
a)
CH4
b)
CH3
c)
CH
d)
CH2
7.
What is the suffix for single bonded hydrocarbons?
a)
-yne
b)
-ene
c)
-ane
d)
-one
8.
The "ane" ending in "alkane" tells someone that they are dealing with _________-bonded carbons.
a)
single
b)
double
c)
triple
d)
quadruple
9.

Which of the following shows the structure of ethene?

a)
b)
c)
d)
10.
General formula of Alkene is 
a)
CnH2n+2
b)
CnH2n
c)
CnH2n+1OH
d)
CnH2n+1COOH
11.

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

a)

An acid catalyst

b)

A low temperature

c)

UV light

d)

A low pressure

12.

Alkanes react with excess oxygen to form

a)

carbon dioxide and water

b)

salt and water

c)

carbon monoxide and soot

d)

metal hydroxide and hydrogen

13.

Possible products of INCOMPLETE combustion

a)

Carbon (C)

b)

Carbon Monoxide (CO)

c)

Carbon Dioxide (CO2)

d)

Water (H2O)

14.
Hydrocarbons are compounds that contain
a)
Carbon, only
b)
Carbon and Hydrogen, only
c)
Carbon, Oxygen, and Hydrogen, only
d)
Carbon, Oxygen, Hydrogen, and Nitrogen, only
15.

In complete combustion, the products are?

a)

Carbon monoxide and water

b)

Carbon dioxide and water

c)

Carbon dioxide and carbon

d)

Carbon and water

16.

What is the suffix for double bond hydrocarbons ?

a)

-ol

b)

-ene

c)

-ane

d)

-one

17.

Which of the following shows the structure of propene?

a)
b)
c)
d)
18.
What is the IUPAC name of C5H12?
a)
Pentane
b)
Hexane
c)
Butane
d)
Heptane
19.

Which of the following statements concerning the reaction of methane with bromine is/are correct?

(1) It is an addition reaction.

(2) It is a substitution reaction.

(3) A similar reaction will occur if propane is used instead of methane.

a)

(1) only

b)

(2) only

c)

(1) and (3) only

d)

(2) and (3) only

20.
Which of the following generally undergoes substitution reactions
a)
alkanes
b)
alkenes
c)
Alkanes and alkenes 
d)
algebras
21.

What happens if an alkane reacts with limited oxygen?

a)

Produced carbon dioxide and water

b)

Produced carbon monoxide and water

c)

Produced oxygen and water

d)

Produced soot and water

22.

What type of chemical reaction is this:

C3H8 + 5O2 --> 3CO2 + 4H2O

a)

Incomplete combustion

b)

Substitution with oxygen

c)

Complete combustion

d)

Substitution with chlorine

23.

What type of chemical reaction is this:

C3H8 + Br2 --> C3H7Br + HBr

a)

Incomplete combustion

b)

Substitution with chlorine

c)

Complete combustion

d)

Substitution with bromine

24.

Which of the following is true about incomplete combustion?

a)

It takes place because there is too much supply of air

b)

It takes place because there is not enough supply of air

c)

The products are soot and hydrocarbons

d)

The products are hydrogen and water

25.

Hydrocarbons burning is an example of what type of chemical reaction ?

a)

neutralisation

b)

endothermic

c)

addition

d)

exothermic

26.

C5H12 + Br2 --> C5H11Br + HBr

This reaction is called____________________.

a)

Substitution

b)

Addition

c)

Cracking

d)

Combustion

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