Ordinary level 2026 littoral regional mock chemistry 2

Based on the image provided, here are the questions extracted from SECTION C of the examination paper:

Question 8

Construction of bridges in Cameroon is mostly done using a particular metal.

• (a) Name the metal used for this activity.

• (b) Describe how this metal is extracted from a named ore.

• (c) State two other uses of this metal and relate each to a particular property.

  (1, 15, 4 marks)

Question 9

Salts are generally prepared in the laboratory by the following methods:

• (a) Action of dilute acids on metal oxides.

• (b) Action of dilute acids on alkalis.

• (c) Action of dilute acids on metals.

For each method, choose a suitable salt and describe how a pure dry sample of each salt is prepared. Your description should show the starting material, necessary equations and precautions.

(6, 7, 6 marks)

Question 10

Differentiate between the following giving examples in each case:

• (a) Allotropy and polymorphism

• (b) Physical changes and chemical changes

• (c) Esterification and isomerism

• (d) Addition polymerization and condensation polymerization.

  (5, 5, 5, 5 marks)

Would you like me to provide the model answers or chemical equations for any of these specific questions?