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Chemical Engineering :: Chemical Engineering Basics

  1. A pipeline buried in soil is commonly protected from corrosion by

  2. A.
    anodic protection.
    B.
    cathodic protection.
    C.
    using inhibitors.
    D.
    using a special alloy resistant to corrosion.

  3. Circulation of liquid metal (i.e. molten sodium) in a liquid metal cooled nuclear reactor is done by a/an __________ pump.

  4. A.
    electromagnetic
    B.
    axial flow
    C.
    diaphragm
    D.
    reciprocating

  5. Titanium is produced by __________ of Ti Cl4.

  6. A.
    electrolytic reduction
    B.
    calcium reduction
    C.
    magnesium reduction
    D.
    thermal dissociation

  7. __________ strain gauge is the most sensitive sensing element for strain measurement.

  8. A.
    photoelastic
    B.
    semiconductor
    C.
    wire resistance
    D.
    none of these

  9. A simple closed grinding circuit may consist of

  10. A.
    a ball mill and a classifier.
    B.
    a rod mill and a hydrocyclone.
    C.
    a jaw crusher and a hydrocyclone.
    D.
    a ball mill and a froth floatation cell.

  11. In a titration involving weak acid and strong base, the preferred indicator is

  12. A.
    Methyl orange
    B.
    Phenolphthalein
    C.
    Ethyl orange
    D.
    Fehling's solution

  13. Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal & A = its surface area ; in the casting)

  14. A.
    V/A
    B.
    V/A2
    C.
    V2/A
    D.
    V2/A2

  15. Pick out the wrong statement.

  16. A.
    Annealing twins are not observed in pure aluminium, because it has higher strain energy.
    B.
    Load during cold rolling can be lowered by the application of front tension.
    C.
    Very fine grain structure is desirable for high temperature creep application of materials.
    D.
    Soft magnetic materials are those which have less area within the hysterisis loop.

  17. Minimum diameter of the tube used for making water manometer should be __________ mm to avoid a correction for the effect of capillarity.

  18. A.
    1
    B.
    2.5
    C.
    4
    D.
    6

  19. Which of the following heat treatment processes is used for softening the hardened material ?

  20. A.
    Normalising
    B.
    Tempering
    C.
    Annealing
    D.
    None of these