| 1. | The material used in furnace wall as a inner most layer, to resist high temperatures, physical and chemical reactions is called __________ ? | |
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nitrading
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charcoal
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refractory
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epoxy
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Report Question| 2. | What is the melting point of nickel ? | |
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1539°c
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1450°c
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660°c
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1083°c
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| 3. | 18/8 stainless steel contains ? | |
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18% tungsten and 8% nickel
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18% nickel and 8% tungsten
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18% nickel and 8% chromium
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18% chromium and 8% nickel
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| 4. | Which one of the following alloys can resist saltwater corrosion ? | |
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nickel chrome alloy
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zinc alloy
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brass
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gun metal
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| 5. | Which one of the following properties of a metal is the power of return to its original shape after deformation when the load is removed ? | |
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elasticity
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plasticity
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malleability
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ductility
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| 6. | The filament of lamp bulbs are made of ? | |
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tin
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tungsten
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nickel
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chromium
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| 7. | Carbon content in cold chisel is ? | |
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0.6 to 0.7%
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1.2 to 1.4%
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0.85 to 0.95%
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1.00 to 1.2%
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| 8. | Bent snip is used for ? | |
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making holes on the sheet
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removing the burr
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cutting the sheet along curved lines
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bending the sheet
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| 9. | Trimming is the process associated with ? | |
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press work
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electro plating
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forging
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machining
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| 10. | Solder is an alloy of ? | |
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lead and tin
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copper and nickel
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copper and zinc
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chromium and neckel
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