cameroon gce intermediate level 2025 material technology and workshop processes 2
cameroon gce intermediate level 2025 material technology and workshop processes 2
SECTION A: MATERIALS TECHNOLOGY
Answer Any THREE questions from this Section
1. NON-FERROUS METALS
a) What are non-ferrous metals? (1 mark)
b) Give any THREE properties EACH of the following non-ferrous metals making them to be widely used in vehicles:
i) Aluminium. (0.25×3=0.75 mark)
ii) Copper. (0.25×3=0.75 mark)
c) Copy in your answer booklet and complete the following table with information on aluminium: (0.25×5=1.25marks)
| Symbol | Melting point | Density () | Crystal structure | Principal ore | Two alloying elements |
d) Name THREE steps involved in the extraction of aluminium from its ore. (0.5×3=1.5 marks)
e) Name any THREE vehicle components that are made from aluminium alloy. (0.5×3=1.5 marks)
f) Copper (Cu) can be alloyed with other metals. Copy in your answer booklet and complete the table below with regard to this. (0.25×6=1.5marks)
| Copper alloy | Name of alloy (0.25×3=0.75marks) | Two examples of its use in vehicles (0.25×6=1.5marks) |
| CuSn 14 | ||
| CuZn 30 | ||
| Cu Al 11 Fe 3 |
g) Name any other FOUR types of non-ferrous metals that you know. (0.25×4=1 mark)
