Question 1
(a) State two safety precautions to be observed in forging operation.
(b) (i) What is extraction of metals?
(ii) List two methods of metal extraction.
(iii) State two methods of preparing iron ore prior to smelting operation.
(c) State three effects for not applying finishes on a finished metal article.
Observation
Candidates’ performance was very satisfactory. However, questions 1(b)(iii) was not adequately answered. Its solution is as follows:
(b)(iii) Methods of Preparing Iron Ore Prior to Smelting Operation
- By crushing/sieving to suitable sizes
- By washing
- By removing unwanted materials
- By magnetic separation