AY2526 CH Q1 Pre-Lesson Lesson 5

What is hydrocarbon?

• A hydrocarbon is a compound consisting of hydrogen and carbon atom only

• A hydrocarbon is a mixture of gases and liquids.
• A hydrocarbon is a type of metal alloy.
• A hydrocarbon is a compound made of oxygen and nitrogen.

Which one is the correct formula for pentane?

• C5H10
• C6H14
• C4H10
• C5H12

Which hydrocarbon is from the homologous series of alkene?

• C3H8

• C4H10

• C4H8

• C2H6

Select the product (s) that will form during combustion in excess oxygen

• Water

• Carbon dioxide

• Carbon monoxide

• Hydrogen gas

A hydrocarbon molecule is considered to be saturated if the molecule contains

• only triple bonds between carbon atoms
• double bonds between carbon atoms
• only single bonds between carbon atoms
• a mix of single and double bonds between carbon atoms

Petroleum is a useful natural resource. State the process to separate the petroleum into a useful product

• Distilation

• Simple distillation

• Fractional distillation

• Purification

State the property of the fractions on which this petroleum is separated.

• Boiling point

• Molar mass

• Melting point

• Density

State the lightest product from the crude oil mixture

• Refinery gas

• Petrol

• Diesel

• Bitumen

State the heaviest product from the crude oil mixture

• Refinery gas

• Petrol

• Diesel

• Bitumen

Calculate the molar mass of butene. (C4H8)

• 58 g/mol

• 54 g/mol

• 56 g/mol

• 60 g/mol