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Chemical Engineering :: Chemical Engineering Basics

  1. Which of the following is a boiler accessory i.e., not a boiler mounting ?

  2. A.
    Blow off cock
    B.
    Feed check valve
    C.
    Feed water pump
    D.
    Stop valve

  3. Which of the following forces does not act on a fluid at rest ?

  4. A.
    Viscous force
    B.
    Gravity force
    C.
    Hydrostatic force
    D.
    Surface tension force

  5. Density in the solid state is slightly less than that in its liquid state, in case of

  6. A.
    carbon dioxide
    B.
    water
    C.
    mercury
    D.
    none of these.

  7. Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.

  8. A.
    slip
    B.
    fracture
    C.
    winning
    D.
    dislocation

  9. __________ number determines whether the fluid flow in an open channel is supercritical, critical or sub-critical.

  10. A.
    Mach
    B.
    Reynolds
    C.
    Froude
    D.
    Weber

  11. The delivery pressure of boiler feed water pump compared to the boiler steam pressure is

  12. A.
    same
    B.
    slightly less
    C.
    slightly more
    D.
    much more

  13. The excess air required for the combustion of pulverised coal is of the order of about __________ percent.

  14. A.
    5
    B.
    15
    C.
    30
    D.
    45

  15. Pick out the wrong statement.

  16. A.
    Complete unity of command exists in a line organisation.
    B.
    Line organisation is net suitable for expansion and growth of an industry.
    C.
    In line and staff organisation, "line" executes and "staff directs.
    D.
    none of these.

  17. __________ of austenite decreases the hardenability in steel.

  18. A.
    Fine grains
    B.
    Coarse grains
    C.
    Homogeneity
    D.
    Dissolved elements (except cobalt)

  19. A jig is used while __________ a hole.

  20. A.
    boring
    B.
    counter boring
    C.
    drilling
    D.
    enlarging