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Chemical Engineering :: Chemical Engineering Basics-2

  1. __________ is the most important element, which controls the physical properties of steel.

  2. A.

     Manganese

    B.

     Silicon

    C.

     Carbon

    D.

     Vanadium

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  3. Friction factor for fluid flow in pipe does not depend upon the

  4. A.

     Pipe length

    B.

     Pipe roughness

    C.

     Fluid density & viscosity

    D.

     Mass flow rate of fluid

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  5. Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the

  6. A.

     Length of the pipe

    B.

     Diameter of the pipe

    C.

     Density of the fluid

    D.

     Velocity of the fluid

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  7. The property of material, by which a given amount of energy is absorbed by it, without plastic deformation is called

  8. A.

     Resilience

    B.

     Toughness

    C.

     Ductility

    D.

     Impact strength

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  9. Filler material used in welding having the lowest melting point out of the following is

  10. A.

     Aluminium

    B.

     Soft solder

    C.

     Silver solder

    D.

     Brazing spelter

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  11. A cylinderical rod subjected to a tensile strain within the elastic limit undergoes a volume change. If the volume strain is equal to half the tensile strain, then the Poisson's ratio of the rod is

  12. A.

     0

    B.

     0.33

    C.

     0.44

    D.

     0.25

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  13. Lime contains about 90% CaO. Percentage CaO present in limestone is about

  14. A.

     25

    B.

     50

    C.

     70

    D.

     80

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  15. Limestone addition in the blast furnace is done to flux __________ present in the raw materials.

  16. A.

     SiO₂

    B.

     Al2O₃

    C.

     MnO₂

    D.

     P

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  17. The most detrimental impurity in high pressure boiler feed water is

  18. A.

     Suspended salt

    B.

     Dissolved salt

    C.

     Silica

    D.

     Turbidity

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  19. Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about

  20. A.

     9:1

    B.

     17 : 1

    C.

     23 : 1

    D.

     29 : 1

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