Ordinary level 2026 South West mock materials technology and workshop processes 2

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SECTION A

(Answer THREE Questions from this Section)

1. WORKSHOP SAFETY AND METROLOGY

a- Give three purpose of industrial safety (1.5mrks)

b- Define the following phrases:-

• b-i) Mouth to mouth ventilation, (1mrk)

• b-ii) External chest compression (1mrk)

c- when is it necessary to perform mouth to mouth ventilation on a victim or casualty. (1.5mrks)

d- What is the first thing you should do if someone is in an electric shock? (1mrk)

e- Give two general causes of accident. Carelessness, fatigue, improper training, poor hygienic condition (2mrks)

f-i) Identify figure 1 below. (1mrks)

(Figure 1 shows a diagram of a Micrometer Screw Gauge)

f-ii) Give the names of the numbered parts: 1, 2, 3, 4, 5 and 6. (1.5mrks)

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2. MATERIALS, AND METALLURGY

a) Define these terms: i) ferrous metals, ii) nonferrous metals iii) iron ore (1.5mrks)

b) What name is given to the ore from which aluminum is extracted? (0.5mrk)

c) which name is given to the end product from a blast furnace? (1mrk)

d) State any four automobile components produced from aluminum or its alloy (1mrk)

e) Pig iron is extracted from iron ore,

• e-i) state three types of iron ores give their iron contents (1.5mrks)

• e-ii) why should coke be included in the furnace during the production of pig iron (1mrk)

• e-iii) explain two reasons for constructing the brake drum with cast iron. (1mrk)

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3. CRYSTAL STRUCTURES AND HEAT TREATMENT OF METALS

a) Define the following terms as in metallurgy: (2mrks)

• i) heat treatment, ii) tempering, iii) quenching. iv) Melting point.

b) List two properties a metal will process after being quenched. (1.5mrks)

c) List four reasons for heat treating a material (2mrks)

d) State four structure process a material may undergo in the iron carbon diagram (2mrks)

e) Sketch three types of crystalline metallic structures and state their names. (3mrks)