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  1. Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be

  2. A.
    5
    B.
    1.25
    C.
    2.5
    D.
    3.75

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  3. Which of the following is an acidic constituent of B.F. slag ?

  4. A.
    SiO2
    B.
    FeO
    C.
    MgO
    D.
    CaO

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  5. Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of portland cement. The component of Portland cement which first hardens is

  6. A.
    5CaO . 3 Al2O3
    B.
    3CaO . Al2O3
    C.
    3CaO . SiO2
    D.
    2CaO . SiO2

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  7. Material of construction of the electrode used in the electric resistance welding is

  8. A.
    stainless steel
    B.
    graphite
    C.
    copper
    D.
    steel

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  9. In practice, the compression ratio of compression-ignition (CI) engine ranges from

  10. A.
    15 to 25
    B.
    5 to 10
    C.
    40 to 55
    D.
    60 to 70

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  11. __________ property of steel increases by addition of large amount of silicon in it.

  12. A.
    Mechanical
    B.
    Machining
    C.
    Magnetic
    D.
    Refractory

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  13. __________ stress can not be sustained by a fluid in equilibrium.

  14. A.
    Shear
    B.
    Tensile
    C.
    Compressive
    D.
    none of these

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  15. __________ test can be termed as the semi-distructive test.

  16. A.
    Impact
    B.
    Torsion
    C.
    Hardness
    D.
    Charpy

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  17. Uniform ramming of sand in green sand moulding process leads to

  18. A.
    reduced chance of gas porosity.
    B.
    greater dimensional stability of the casting.
    C.
    uniform flow of molten metal into the mould cavity.
    D.
    less sand expansion type of casting defect.

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  19. The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element.

  20. A.
    Silicon
    B.
    Carbon
    C.
    Phosphorous
    D.
    Chromium

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