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Chemical Engineering :: Chemical Engineering Basics

  1. Fibrous fracture is normally encountered in the __________ materials.

  2. A.
    hard
    B.
    elastic
    C.
    ductile
    D.
    brittle

  3. Bad odour in sanitary latrines is reduced by periodically sprinkling

  4. A.
    bleaching powder.
    B.
    lime powder.
    C.
    aluminium sulphate.
    D.
    none of these.

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

  6. A.
    Tungsten
    B.
    Zirconium
    C.
    Molybdenum
    D.
    Tantalum

  7. The only suitable method for hardening the low carbon steel is case hardening. Which of the following is a case hardening process?

  8. A.
    Cyaniding
    B.
    Sheardising
    C.
    Spherodising
    D.
    None of these

  9. Annealing of cast iron

  10. A.
    softens it to facilitate machining.
    B.
    decreases the free carbon.
    C.
    increases the strength.
    D.
    none of these.

  11. Coating thickness in case of galvanising of steel sheet generally corresponds to the deposition of __________ gms of zinc per m2 of steel strip.

  12. A.
    5-10
    B.
    1000-1500
    C.
    120-500
    D.
    1500-3000

  13. Chlorine acts as a bleaching agent only in the presence of

  14. A.
    dry air
    B.
    pure oxygen
    C.
    moisture
    D.
    sunlight

  15. Corona discharge is related to the operation of a/an

  16. A.
    induction motor.
    B.
    electrostatic precipitator.
    C.
    fast breeder reactor.
    D.
    magneto hydrodynamic generator (MHD).

  17. Plastics as a material of construction suffer from the drawback of low

  18. A.
    machinability
    B.
    density
    C.
    strength
    D.
    plastic deformation

  19. Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is

  20. A.
    malleable iron
    B.
    grey cast iron
    C.
    chilled cast iron
    D.
    white cast iron