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  1. Which of the following contains the least percentage of carbon ?

  2. A.

     Pig iron

    B.

     Wrought iron

    C.

     Cast iron

    D.

     Malleable iron

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  3. Which of the following commonly used condenser tube materials has the lowest thermal conductivity?

  4. A.

     Admirability brass

    B.

     Stainless steel

    C.

     Aluminium brass

    D.

     Titanium

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  5. The main constituent of bones is

  6. A.

     CaF₂

    B.

     Ca₃(PO₄)₂

    C.

     CaCO₃

    D.

     CaCl₂

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  7. The tensile load-elongation curve of a metal does not describe

  8. A.

     Work hardening

    B.

     Yield stress

    C.

     Anisotropy index

    D.

     Necking strain

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  9. Other parameters remaining same, the recrystallisation temperature of an alloy is lowered, when

  10. A.

     Strain rate is increased

    B.

     Grain size is increased

    C.

     Prior cold deformation is increased

    D.

     Not affected by any of the above parameters

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  11. The order of a chemical reaction

  12. A.

     Can be determined only experimentally

    B.

     Can be determined from the stoichiometry of the reaction

    C.

     Can not be zero

    D.

     Can be fractional

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  13. Fibre reinforced plastic (FRP) are

  14. A.

     Made of glass fibre and thermoplastic resins

    B.

     Anisotropic

    C.

     Made of thermosetting resin and glass fibre

    D.

     Both B and C

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  15. Factor of safety in machine design is defined as the ratio of ultimate stress to __________ stress.

  16. A.

     Working

    B.

     Bearing

    C.

     Yield

    D.

     None of these

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

  18. A.

     Fat

    B.

     Soap

    C.

     Detergent

    D.

     Surfactant

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  19. Thermal expansion of solid is employed in the temperature measurement by a

  20. A.

     Bimetallic thermometer

    B.

     Thermocouple

    C.

     Mercury thermometer

    D.

     Resistance thermometer

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