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  1. Maximum carbon content in cast iron is __________ percent.

  2. A.
    3.8
    B.
    4
    C.
    4.3
    D.
    4.6

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  3. Screws are specified by their __________ diameters.

  4. A.
    minor
    B.
    major
    C.
    pitch
    D.
    none of these

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  5. The stress at which extension of the material takes place more rapidly as compared to the increase in load is termed as the __________ point of the material.

  6. A.
    elastic
    B.
    ultimate
    C.
    yielding
    D.
    breaking

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  7. A material being tested for endurance strength is subjected to the __________ load.

  8. A.
    impact
    B.
    completely reversed
    C.
    dynamic
    D.
    static & dynamic

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  9. With increase in pressure, the latent heat of steam

  10. A.
    increases.
    B.
    decreases.
    C.
    remains unchanged.
    D.
    data insufficient; can't be predicted.

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  11. 'Flare tower' used in industry is meant for

  12. A.
    venting off (after burning) the excess inflammable/toxic gases at high pressure.
    B.
    absorbing the pollutant gases from the furnace exhaust.
    C.
    cooling of furnace exhaust gases.
    D.
    none of these.

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  13. Which of the following has the highest modulus of elasticity (about 7 x 106 kg/cm2) ?

  14. A.
    High speed steel
    B.
    Stainless steel
    C.
    Tungsten carbide
    D.
    Superalloys

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  15. Electrolytic reduction cell used for conversion of calcined Al2O3 to Al is a carbon lined furnace operating at 800-900 °C. The purpose of electric current supplied to the furnace is to

  16. A.
    achieve very high purity of aluminium (99.9%).
    B.
    keep the electrolyte in liquid condition by the generation of heat.
    C.
    electrolytically dissociate alumina.
    D.
    both(b) & (c).

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  17. All radiations falling on a black body are

  18. A.
    refracted
    B.
    reflected
    C.
    transmitted
    D.
    absorbed

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  19. Styrofoam is the commercial name of

  20. A.
    polyurathene
    B.
    polystyrene
    C.
    polyacrylonitrile
    D.
    polybutadiene

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