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Chemical Engineering :: Chemical Engineering Basics

  1. The speed of sound will be maximum in

  2. A.
    vacuum
    B.
    metal
    C.
    air
    D.
    water

  3. Work done by a/an __________ process is determined by.

  4. A.
    adiabatic
    B.
    quasi-static
    C.
    isothermal
    D.
    isentropic

  5. In case of water (Prandtl number ≈ 6) flowing over a flat plate heated over the entire length, the thermal boundary layer thickness as compared to hydrodynamic boundary layer thickness is

  6. A.
    less
    B.
    more
    C.
    equal
    D.
    unpredictable

  7. __________ number is sometimes used in place of Grashoff number in free convection heat transfer.

  8. A.
    Stanton
    B.
    Brinkman
    C.
    Rayleigh
    D.
    Nusselt

  9. Wrought iron does not have the

  10. A.
    uniform strength in all directions.
    B.
    ability to hold protective coating.
    C.
    high ductility & corrosion resistance.
    D.
    easily weldable characteristics.

  11. Nitriding of steel is a process for

  12. A.
    case hardening
    B.
    spheroidising
    C.
    normalising
    D.
    annealing

  13. The maximum percentage of chromium that can be added to steel is about

  14. A.
    12
    B.
    18
    C.
    24
    D.
    30

  15. Holes in a plate for rivetted joints is preferably made by

  16. A.
    drilling
    B.
    tapping
    C.
    reaming
    D.
    punching

  17. The temperature at which a gas, when subjected to Joule-Thomson expansion, neither cools or heats up, is termed as the __________ temperature. Above this temperature the gas heats up on throttling and below this the gas cools down.

  18. A.
    isotactic
    B.
    saturation
    C.
    inversion
    D.
    throttling

  19. Source of heat supply in a cupola is

  20. A.
    coke
    B.
    charcoal
    C.
    lumpy coal
    D.
    pulverised coal