cameroon gce intermediate level workshop process and material 2

cameroon gce intermediate level workshop process and material 2

cameroon gce intermediate level workshop process and material 2

1) Iron ore is not pure as it comes from the earth crust, and it is the mixture of iron and its impurities.
(a) Name four types of iron ore. .
(4 marks)
(b) Differentiate between ferrous and nonferrous metals. (4 marks)
(c) State four uses of aluminium . (4 marks)
(d) List four mechanicals methods used in producing steel . (4 marks)
(e) Name and explain three types of carbon steel. (9 marks)
(Total 25 marks)
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2) The following metals are found in a metallic work shop and market as follows
GX16 Cr Ni 18-12, EN AC-AL Si 7Mg5 and G35NiCrMo16
(a) Give the standard designation of each of the metals.
(8 marks)

(b) Name the best corrosion resistant metal among the four metals above
Justify your answer
(2 marks)
(2 marks)

(c) Define corrosion (2 marks)
(d) State two causes of corrosion (2 marks)
(e) List four methods used to protect metals against corrosion. (4 marks)
(f) name and explain with sketches four types of unit cells. (5 marks)
(Total 25 marks)

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