| 1. | The stiffness is the ability of a material to resist ? | |
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deformation under stress
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fracture due to high impact loads
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externally applied forces with breakdown or yielding
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none of the above
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Report Question| 2. | Brass is an alloy of ? | |
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copper and zinc
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copper and tin
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copper, tin and zinc
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none of these
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| 3. | The defect which takes place due to imperfect packing of atoms during crystallisation is known as ? | |
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line defect
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surface defect
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point defect
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none of these
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| 4. | The approximate height of a blast furnace is ? | |
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10m
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20m
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30m
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40m
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| 5. | A steel containing ferrite and pearlite is ? | |
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hard
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soft
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tough
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hard and tough
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| 6. | Silicon in cast iron ? | |
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makes the iron soft and easily machinable
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increases hardness and brittleness
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makes the iron white and hard
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none
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| 7. | A coarse grained steel ? | |
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is less tough and has a greater tendency to distort during heat treatment
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is more ductile and has a less tendency to distort during heat treatment
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is less tough and has a less tendency to distort during heat treatment
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is more ductile and has a greater tendency to distort during heat treatment
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| 8. | Which of the following material has maximum malleability ? | |
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Lead
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Soft steel
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Wrought iron
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Copper
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| 9. | Wrought iron ? | |
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is a ductile material
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can be easily forged or welded
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cannot stand sudden and excessive shocks
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all of these
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| 10. | Which of the following metal is used for nuclear energy ? | |
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Uranium
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Thorium
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Niobium
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all of these
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