Question 1
Which of the following hydrocarbons is an alkane?
A. C2H4
B. C3H6
C. C4H10
D. C5H8
Question 2
Which hydrocarbon is used as the primary reference for octane rating in petrol?
A. Methane
B. Ethene
C. Iso-octane
D. Benzene
Question 3
Which of the following reactions is characteristic of alkenes?
A. Substitution
B. Addition
C. Elimination
D. Oxidation
Question 4
Which hydrocarbon is a major component of natural gas and is used as a fuel?
A. Ethyne
B. Methane
C. Butene
D. Phenol
Question 5
Which of the following is NOT a product of the petrochemical industry?
A. Plastics
B. Detergents
C. Medicines
D. Bread
Question 6
a) Define hydrocarbons and classify them based on their structural differences. [2]
b) Explain the significance of hydrocarbons in the petrochemical industry. [3]
Question 7
a) Differentiate between saturated and unsaturated hydrocarbons, providing an example for each. [3]
b) Describe the general trend in boiling points of alkanes as the number of carbon atoms increases. [2]
Question 8
a) What is the primary reaction mechanism for alkenes in the presence of halogens? Provide an example. [3]
b) Explain the importance of hydrocarbons in the synthesis of other organic compounds. [2]
Question 9
a) Describe the process of cracking in the petrochemical industry. [2]
b) Why is cracking considered essential for meeting the demands of certain hydrocarbon products? [3]
c) Provide an example of a hydrocarbon that can be obtained from the cracking process. [2]
Question 10
a) Define and differentiate between chain isomerism and functional group isomerism. [3]
b) Provide an example of a hydrocarbon that exhibits chain isomerism. [2]
c) Explain the significance of functional group isomerism in organic reactions. [3]