CIE iGCSE Co-Ordinated Science C11.3 Fuels Exam Style Questions Paper 1
Question
Which property allows petroleum to be separated by fractional distillation?
A. Boiling point
B. Colour
C. Density
D. Melting point
▶️Answer/Explanation
Answer: A
Explanation: Petroleum is separated by fractional distillation based on the different boiling points of its components. Each fraction condenses at a different temperature.
Question
What is the main constituent of natural gas?
A. ethane
B. ethanol
C. ethene
D. methane
▶️Answer/Explanation
Answer: D
Explanation: The main constituent of natural gas is methane (CH₄), which makes up the majority of its composition.
Question
Butane is a hydrocarbon.
What is the word equation for the complete combustion of butane?
A butane + oxygen carbon + water
B butane + oxygen carbon dioxide + carbon monoxide + water
C butane + oxygen carbon dioxide + water
D butane + oxygen carbon monoxide + water
▶️Answer/Explanation
Ans :C
Question
Which fractions obtained by the fractional distillation of petroleum are used as fuels?
1 bitumen
2 diesel oil
3 gasoline
4 refinery gas
(A) 1 and 2 only
(B) 3 and 4 only
(C) 1, 2 and 3
(D) 2, 3 and 4
▶️Answer/Explanation
Ans: D
Question
What is a use of the naphtha fraction obtained by the fractional distillation of petroleum?
A bottled gas for heating
B feedstock for making chemicals
C fuel for diesel engines
D road surfaces
▶️Answer/Explanation
Ans : B
Question
Naphtha is obtained by the fractional distillation of petroleum.
Which statements about naphtha are correct?
1 It burns to form carbon dioxide and water.
2 It is a mixture of hydrocarbons.
3 It is present in bottled gas.
4 The main component of naphtha is methane.
A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4
▶️Answer/Explanation
Ans : A
Question
Petroleum is separated into fractions by fractional distillation.
Information about uses of some fractions and positions in the fractionating column where they are
collected is shown.
Which rows are correct?
(A) 1 and 2 (B) 1 and 4 (C) 2 and 3 (D) 3 and 4
▶️Answer/Explanation
Ans : D
Question
Which energy source is an example of a fossil fuel?
(A) hydrogen
(B) methane
(C) the Sun
(D) wood
▶️Answer/Explanation
Ans: B
Question
Which process is used to separate petroleum into useful products?
(A) cracking
(B) filtration
(C) fractional distillation
(D) thermal decomposition
▶️Answer/Explanation
Ans: C
Question
Which statement about petroleum is correct?
(A) It contains mostly alkene molecules.
(B) It is a mixture of hydrocarbons.
(C) It is separated into fractions by cracking.
(D) Its main constituent is methane.
▶️Answer/Explanation
Ans : B
Question
Which structure represents the main constituent of natural gas?
▶Answer/Explanation
Ans : A
Question
Which statement about manufacturing processes is correct?
(A) Limestone is manufactured from calcium oxide.
(B) Limestone is manufactured from acidic waste products.
(C)Ethene is manufactured by addition polymerisation.
(D) Sulfuric acid is manufactured from sulfur.
▶️Answer/Explanation
Ans: D
Question
Naphtha is obtained from petroleum. What is a use for naphtha?
A cooking
B making chemicals
C heating
D making roads
▶️Answer/Explanation
Answer: B making chemicals
Explanation: Naphtha is a key feedstock in the petrochemical industry for producing chemicals such as plastics, solvents, and other synthetic materials.
Question
Which substance is not a fossil fuel?
A) coal
B) hydrogen
C) natural gas
D) petroleum
▶️Answer/Explanation
Answer: B) hydrogen
Explanation: Fossil fuels are formed from the remains of ancient organisms and include coal, natural gas, and petroleum. Hydrogen is not a fossil fuel; it is a clean energy source that can be produced through various methods, including electrolysis of water.
Question
What are the uses of the fractions obtained from petroleum?
| gas oil | gasoline | refinery gas | |
|---|---|---|---|
| A | cooking | petrol fuel | diesel fuel |
| B | diesel fuel | heating | petrol fuel |
| C | diesel fuel | petrol fuel | cooking |
| D | petrol fuel | diesel fuel | heating |
▶️Answer/Explanation
Answer: C
Explanation: Gas oil is used as diesel fuel, gasoline is used as petrol fuel, and refinery gas is used for cooking. Therefore, the correct option is C.
Question
Petroleum is separated into useful fractions by fractional distillation. Which row matches the fractions to their uses?
| fuel | heating and cooking | making chemicals | |
|---|---|---|---|
| A | bitumen | naphtha | refinery gas |
| B | gasoline | bitumen | naphtha |
| C | gasoline | refinery gas | naphtha |
| D | naphtha | refinery gas | gasoline |
▶️Answer/Explanation
Answer: C. gasoline, refinery gas, naphtha
Explanation: Gasoline is used as fuel, refinery gas is used for heating and cooking, and naphtha is used in the production of chemicals.
Question
What is the main constituent of natural gas?
A. ethane
B. ethene
C. methane
D. nitrogen
▶️Answer/Explanation
Answer: C
Explanation: The main constituent of natural gas is methane (CH4), which is a simple hydrocarbon and the primary component of natural gas.