Engineering Materials Online Quiz

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1. In normalizing process, the hypereutectoid steel is heated from 30° C to 50° C above the upper critical temperature and then cooled in still air.
True
False

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2. An eutectoid steel consists of
Wholly pearlite
Wholly austenite

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3. Cast iron is used in those parts which are subjected to shocks.
Correct
Incorrect

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4. The upper critical point varies according to the carbon content in steel.
True
False

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5. The acidic Bessemer process is suitable for producing steel from pig iron containing large quantities of phosphorus.
Correct
Incorrect

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6. Phosphorus is added in low carbon steels to raise its yield point.
True
False

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7. Pearlite is a combination of 87% ferrite and 13% cementite.
Yes
No

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8. The aluminium alloy, mainly used, for anodized utensil manufacture, is
Duralumin
Hindalium

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9. The alloy, mainly used for corrosion resistance in stainless steels is
Silicon
Chromium

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10. Corrosion resistance of steel is increased by adding nickel and chromium.
Agree
Disagree

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11. An aluminium alloy with 11% silicon is used for making engine pistons by die casting technique.
Yes
No

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12. The toughness of a material _________ when it is heated.
Increases
Decreases

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13. Grey cast iron is ________ than white cast iron.
Softer
Harder

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14. The stiffness is the ability of a material to resist deformation under stress.
True
False

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15. In a unit cell of close packed hexagonal space lattice, there are twenty four atoms.
Correct
Incorrect

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16. The steel scrap added in the charge of cupola controls the grade of cast iron produced.
Correct
Incorrect

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17. Iron-carbon alloys containing carbon ________ 4.3% are known as hyper-eutectic cast irons.
Less than
More than

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18. Brass (alloy of copper and zinc) is an example of
Substitutional solid solution
Interstitial solid solution

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19. The compressive strength of cast iron is ________ that of its tensile strength.
Less than
More than

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20. Dislocations in materials refer to the following type of defect
Point defect
Line defect

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     Score =

Correct answers:

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