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QUESTION 2
(a) State THREE processes by which iron gas pipes can be corroded.
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2
3
(3 marks)
(b) Explain TWO methods of preventing corrosion of iron pipes.
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2
(4 marks)
(c) Explain TWO ways a copper gas pipe can be protected when laid under a concrete slab floor.
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2
(2 marks)
(d) State TWO essential features of supports for gas pipework running overhead through a building.
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2
(2 marks)
Total 11 marks