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  1. Cold chiesel & hammers are made of

  2. A.
    high speed steel
    B.
    high carbon steel
    C.
    forged steel
    D.
    mild steel

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  3. Which of the following does not lower the surface tension of liquids ?

  4. A.
    Fat
    B.
    Soap
    C.
    Detergent
    D.
    Surfactant

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  5. __________ property of a material is determined by the Herbert Pendulum device.

  6. A.
    Hardness
    B.
    Tensile
    C.
    Toughness
    D.
    Compressive

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  7. Cathodic protection is widely used in controlling corrosion in

  8. A.
    high pressure vessels.
    B.
    marine structure & underground pipelines.
    C.
    overhead fuel gas pipelines.
    D.
    overhead water pipelines.

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  9. Methyl orange indicator turns

  10. A.
    orange yellow in alkaline medium.
    B.
    orange yellow in acidic medium.
    C.
    colourless in acidic medium.
    D.
    colourless in basic medium.

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  11. Out of the following, the most melleable material is

  12. A.
    copper
    B.
    aluminium
    C.
    wrought iron
    D.
    lead

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  13. Addition of silicon to aluminium improves its

  14. A.
    corrosion resistance
    B.
    machinability
    C.
    castability
    D.
    none of these

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  15. Which of the following properties of a solid is not dependent on crystal imperfection ?

  16. A.
    Ductility
    B.
    Semiconductiyity
    C.
    Melting point
    D.
    Yield stress

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  17. In a good rimming steel

  18. A.
    carbon and silicon should be low.
    B.
    silicon should be low but carbon should be high.
    C.
    both silicon & carbon should be high.
    D.
    silicon should be high but carbon should be low.

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  19. "'Dikes' are low height walls made around the storage vessels meant for storing hazardous & inflammable material (e.g., petroleum products). Volume of dikes is equal to (where, V = volume of the storage vessel)

  20. A.
    V
    B.
    V/2
    C.
    2V
    D.
    3V

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