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    Engineering Materials Online Quiz


    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

    2. An eutectoid steel consists of
    Wholly pearlite
    Wholly austenite

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

         Score =

    Correct answers:

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    Item Reviewed: Engineering Materials Online Quiz Rating: 5 Reviewed By: Pranab Debnath
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