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  1. Which of the following materials has the least scrap value ?

  2. A.
    Aluminium
    B.
    Stainless steel
    C.
    Brass
    D.
    Copper

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  3. Force between the molecules of the same substance is called __________ force.

  4. A.
    adhesive
    B.
    cohesive
    C.
    molecular
    D.
    Vander Walls

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  5. Stresses encountered in the metal forming processes are less than the __________ of the material.

  6. A.
    fracture strength
    B.
    yield strength
    C.
    elastic limit
    D.
    limit of proportionality

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  7. Which of the following is not a ferromagnetic material ?

  8. A.
    Nickel
    B.
    Cobalt
    C.
    Aluminium
    D.
    Iron

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  9. Rain drops falling through atmospheric air attain limited terminal velocity, because of

  10. A.
    upward thrust due to air.
    B.
    viscous force exerted by air.
    C.
    surface tension effects of water.
    D.
    force of gravity.

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  11. Addition of silicon to cast iron

  12. A.
    promotes graphite module formation.
    B.
    improves its ductility.
    C.
    does not promote graphite flakes formation.
    D.
    increases the fluidity of molten metal.

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  13. Lead is poured into the joint between two __________ pipes.

  14. A.
    mild steel
    B.
    concrete
    C.
    cast iron
    D.
    asbestos cement

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  15. About __________ ton of coke is required in a cupola to produce one ton of casting.

  16. A.
    0.03
    B.
    0.3
    C.
    0.8
    D.
    1.5

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  17. There are one octahedral void and __________ tetrahedral void in the closest packing of atoms.

  18. A.
    one
    B.
    two
    C.
    three
    D.
    none of these

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  19. Which of the following is prone to cup and cone fracture ?

  20. A.
    Cast iron
    B.
    Soft brass
    C.
    Round specimen of ductile metal.
    D.
    Flat tensile specimen of ductile metal.

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