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Chemical Engineering :: Chemical Engineering Basics-2

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

  2. A.

     Shear

    B.

     Tensile

    C.

     Compressive

    D.

     None of these

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  3. Needles are produced by

  4. A.

     Forging

    B.

     Swaging

    C.

     Extrusion

    D.

     Machining

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  5. Which of the following accounts for maximum loss of energy in a coal fired boiler?

  6. A.

     Incomplete combustion of fuel

    B.

     Outgoing flue gases

    C.

     Radiation heat losses

    D.

     Unburnt carbon in ash

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  7. An ideal material for making cooking vessels should have

  8. A.

     High heat capacity

    B.

     Low heat capacity

    C.

     High thermal conductivity

    D.

     Both B and C

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  9. Leakage in a cooking gas cylinder is detected by

  10. A.

     Radio-isotopes

    B.

     Pouring soap solution on the surface and locating the gas bubbles

    C.

     Halide torch

    D.

     Pungent smell of mercaptans present in the gas

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  11. Secondary hardening in steels arises out of the

  12. A.

     Precipitation of fine alloy carbides at high temperatures

    B.

     Refinement of ferrite grain size by working

    C.

     Decomposition of retained austenite upon heat treatment

    D.

     Precipitation of complex inter-metal-lics upon heat treatment

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  13. Which of the following is not a natural abrasive?

  14. A.

     Silicon carbide

    B.

     Quartz

    C.

     Corundum

    D.

     Emery

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  15. __________ has the highest melting point out of the following.

  16. A.

     Tungsten

    B.

     Zirconium

    C.

     Molybdenum

    D.

     Tantalum

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  17. The __________ of a double acting reciprocating pump as compared to the single acting pump will be almost double.

  18. A.

     Flow output

    B.

     Head developed

    C.

     Overall efficiency

    D.

     Weight

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  19. In hot working, dynamic recovery occurs in

  20. A.

     Metals of low stacking fault energy

    B.

     Metals of high stacking fault energy e.g. α-iron

    C.

     Single crystal of Ni-based superalloys

    D.

     None of these

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