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iGCSE Organic Chemistry Revision Quiz

Total questions: 72

Worksheet time: 42mins

Name
Class
Date
1.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
2.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
3.
How many carbon atoms are in methane?
a)
1
b)
2
c)
3
d)
4
4.
How many carbon atoms are in propane
a)
1
b)
2
c)
3
d)
4
5.
The "ane" ending in "alkane" tells someone that they are dealing with _________-bonded carbons.
a)
single
b)
double
c)
triple
d)
quadruple
6.
What is the general formula of an alkane
a)
2n+2
b)
CnH2n+2
c)
CnH2n
d)
CnHn
7.
What is the general formula of an alkene
a)
2n+2
b)
CnH2n+2
c)
CnH2n
d)
CnHn
8.
What is the exam definition of saturated?
a)
No single bonds
b)
Contains a double bond
c)
No single bonds, all double bonds
d)
No double bonds, all single bonds
9.
Which formula represents an unsaturated hydrocarbon?
a)
A
b)
B
c)
C
d)
D
10.
Which formula represents a saturated hydrocarbon?
a)
A
b)
B
c)
C
d)
D
11.
What is the correct definition for a hydrocarbon?
a)
A compound made of hydrogen and carbon
b)
A mixture made of hydrogen and carbon only
c)
A mixture made of only hydrogen and carbon
d)
A compound made of only hydrogen and carbon
12.

What physical property allows Fractional Distillation to separate different fractions of crude oil?

a)

Melting point

b)

Boiling point

c)

Diffusion rate

d)

Condensation rate

13.
What does the viscosity of a hydrocarbon tell you?
a)
How easily it flows
b)
How easily it sets alight
c)
What its boiling point is
d)
How long the hydrocarbon is
14.
The process of separating the different length hydrocarbons from crude oil is known as...
a)
Distillation
b)
Cracking
c)
Fractional Distillation
d)
Filtering
15.
The longer the hydrocarbon, the ________ the flammability?
a)
Lower
b)
Higher
16.
What is kerosene used for?
a)
Fuel for ships
b)
Fuel for lorries
c)
Fuel for airplanes
d)
Making roads
17.
The longer the hydrocarbon, the _______ the boiling point
a)
Lower
b)
Higher
18.

The longer the hydrocarbon, the _________ the viscosity

a)

Lower

b)

Higher

19.

Fuel for ships and lorries

a)

kerosene

b)

petrol

c)

bitumen

d)

fuel oil

20.

For surfacing roads and roofs

a)

petrol

b)

bitumen

c)

fuel oil

d)

kerosene

21.

Oil fraction with the longest molecules

a)

refinery gases

b)

bitumen

c)

oil fuel

d)

diesel

22.

Oil fraction with the shortest molecules

a)

refinery gases

b)

bitumen

c)

oil fuel

d)

diesel

23.

Oil fraction with the highest boiling point

a)

refinery gases

b)

bitumen

c)

oil fuel

d)

diesel

24.

Oil fraction with the lowest boiling point

a)

refinery gases

b)

bitumen

c)

oil fuel

d)

diesel

25.

The most viscous oil fraction

a)

fuel oil

b)

diesel

c)

bitumen

d)

kerosene

26.

The darkest oil fraction

a)

fuel oil

b)

diesel

c)

bitumen

d)

kerosene

27.

Saturated hydrocarbon

a)

no carbon-carbon double bonds

b)

at least one carbon-carbon double bond

28.

Unsaturated hydrocarbon

a)

no carbon-carbon double bonds

b)

at least one carbon-carbon double bond

29.

What 'water' would you use to tell between alkane and alkene?

a)

limewater

b)

distilled water

c)

bromine water

d)

mineral water

30.

You add bromine water to a saturated hydrocarbon. The bromine water:

a)

stays the same (remains orange/brown)

b)

goes colourless

31.

You add bromine water to an unsaturated hydrocarbon. The bromine water:

a)

stays the same (remains orange/brown)

b)

goes colourless

32.

CH4 + 2O2 --> CO2 + 2H2O

a)

complete combustion

b)

incomplete combustion

33.

CH4 + O2 --> CO + 2H2O

a)

complete combustion

b)

incomplete combustion

34.

When plenty of oxygen is available

a)

complete combustion

b)

incomplete combustion

35.

Carbon monoxide is a colourless, odourless toxic gas. It

is poisonous because it reduces the capacity of blood to

transport:

a)

carbon dioxide

b)

nitrogen

c)

oxygen

d)

water vapour

36.

What is a polymer?

a)

a very light material that is highly flammable

b)

a fossil fuel

c)

a large molecule made from many monomers joined together

d)

a molecule made up of only polar bonds

37.

When acidic gas mixes with rain water

a)

acid rain

b)

purple rain

c)

carbon monoxide

d)

limewater

38.

Car engines produce which acidic gas?

a)

carbon dioxide

b)

nitrogen oxide

c)

sulfur dioxide

39.

What are the effects of acid rain?

a)

It corrodes buildings

b)

Kills aquatic life like fish

c)

Kills trees, plants & crops

d)

All are true

40.

One of the main disadvantages of plastic is

a)

its non-biodegradability

b)

its high availability

c)

that its cheap

d)

that its durable

41.
Which of the following elements must be present in any organic compound?
a)
Carbon
b)
Oxygen
c)
Potassium
d)
Hydrogen
42.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
43.

What term is given to a compound which contains atoms of carbon and hydrogen only?

a)

alkene

b)

hydrocarbon

c)

alkane

d)

saturated

44.

Alkenes have the general formula:

a)

CnH2n

b)

CnH2n+1

c)

CnH2n+2

d)

CnHn

45.

What term describes alkene molecules that contain a C=C double bond?

a)

saturated

b)

unsaturated

46.

Alkanes have the general formula:

a)

CnH2n

b)

CnH2n+1

c)

CnH2n+2

d)

CnHn

47.

What process is used to separate crude oil in hydrocarbons with different chain lengths?

a)

distillation

b)

fractional distillation

c)

cracking

d)

polymerisation

48.

Fractional distillation separates crude oil based on the different __________ of the molecules in the mixture

a)

melting point

b)

boiling point

c)

freezing point

d)

chemical reactivity

49.

Molecules collected at the bottom of the fractionating column tend to be...

a)

more viscous, less flammable and less volatile

b)

less viscous, more flammable and more volatile

c)

more viscous, more flammable and less volatile

d)

less viscous, less flammable and more volatile

50.

What are the 2 products of complete combustion?

a)

carbon dioxide + hydrogen

b)

carbon dioxide + water

c)

carbon monoxide + water

d)

carbon monoxide + hydrogen

51.

When testing for alkenes (unsaturation) bromine water turns from...

a)

orange --> blue/black

b)

colourless --> pink

c)

orange --> colourless

d)

orange --> clear

52.

What type of formula is represented in this picture?

a)

molecular formula

b)

displayed formula

c)

structural formula

53.

CH3CH2CH2CH3

a)

molecular formula

b)

displayed formula

c)

structural formula

54.

What is the molecular formula of the hydrocarbon in the picture?

a)

C4H10

b)

CH3CH2CH2CH3

c)

C4H8

55.

What is the structural formula of the hydrocarbon in the picture?

a)

C4H10

b)

CH3CH2CH2CH3

c)

C4H8

56.

Which letter represents methane?

a)

A

b)

B

c)

C

d)

D

e)

F

57.

Which letter/letters represent unsaturated hydrocarbons?

a)

A

b)

B

c)

C

d)

E

e)

F

58.

Which letter would turn bromine water colourless?

a)

A

b)

B

c)

C

d)

D

e)

F

59.

Which letter represents propane?

a)

A

b)

B

c)

C

d)

D

e)

F

60.

Which letter represents propene?

a)

A

b)

B

c)

C

d)

D

e)

F

61.

Which hydrocarbons are saturated?

a)

A

b)

B

c)

C

d)

D

e)

F

62.

Process 1 is called

a)

cracking

b)

fractional distillation

c)

polymerisation

d)

combustion

63.

Which number represents fractional distillation?

a)

1

b)

2

c)

3

d)

4

64.

Which number represents polymerisation?

a)

1

b)

2

c)

3

d)

4

65.

Process 4 is called

a)

cracking

b)

fractional distillation

c)

polymerisation

d)

combustion

66.

Ethene is an unsaturated hydrocarbon. What is the molecular formula of ethene?

a)

CH4

b)

C2H4

c)

C3H6

d)

C4H8

67.

What will happen to bromine water when ethene is bubbled through it?

a)

it will go colourless

b)

it will remain orange/brown

68.

What will happen to bromine water when ethane is bubbled through it?

a)

it will go colourless

b)

it will remain orange/brown

69.

What will happen to bromine water when butene is bubbled through it?

a)

it will go colourless

b)

it will remain orange/brown

70.

What will happen to bromine water when propane is bubbled through it?

a)

it will go colourless

b)

it will remain orange/brown

71.
a)

saturated hydrocarbon

b)

unsaturated hydrocarbon

72.
a)

Saturated hydrocarbon

b)

Unsaturated hydrocarbon

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