| 1. | In Which furnace, is pig iron manufactured ? | |
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puddling furnace
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electric arc furnace
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blast furnace
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cupola furnace
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Report Question| 2. | Aston process is used to produce _________ ? | |
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steel
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wrought iron
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pig iron
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cast iron
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| 3. | Pig iron is ? | |
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90% pure form of iron
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99.9% pure form of iron
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impure form of iron
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95% pure form of iron
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| 4. | Cinnabar is an ore/mineral of ? | |
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molybdenum
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mercury
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lead
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manganese
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| 5. | Imenite is an ore/mineral of _______ ? | |
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beryllium
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chromium
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titanium
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uranium
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| 6. | Malachite is an ore/mineral of _______ ? | |
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uranium
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Copper
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chromium
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beryllium
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| 7. | The percentage of carbon in low carbon steel ? | |
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0.30 to 0.67%
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0.67 to 1.50%
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0.10 to 0.15%
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0.15 to 0.30%
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| 8. | ___________ is a process of forming a thick oxide layer of aluminium ? | |
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anodising
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chromising
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sheradising
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galvanising
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| 9. | _______ is used to shape the end of a rivet into a round, smooth head ? | |
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rivet set
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mallet
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grover
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stake
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| 10. | Pan head rivet used is for ? | |
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general work
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heavy work
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structural work
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light work
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