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Chemical Engineering :: Materials and Construction

  1. Which one contains the least percentage of carbon ?

  2. A.
    Wrought iron
    B.
    High speed steel
    C.
    Cast iron
    D.
    Pig iron

  3. Thermal shield used in high powered nuclear reactor to protect the walls of the reactor from radiation damage is made of

  4. A.
    concrete
    B.
    steel
    C.
    zircalloy
    D.
    graphite

  5. All materials obey Hooke's law within elastic limit. When elastic limit is reached, the tensile strain

  6. A.
    increases very quickly.
    B.
    decreases very quickly.
    C.
    increases in proportion to stress.
    D.
    decreases in proportion to stress.

  7. Silico-manganese steels (containing 0.7% Mn, 0.5% C and 2% Si)

  8. A.
    do not require heat treatment for any of its applications.
    B.
    are used for leaf and coiled springs.
    C.
    do not have good resilience properties.
    D.
    is tempered at 850°C.

  9. Which of the following is not a copper based alloy with nickel ?

  10. A.
    German silver
    B.
    Monel metal
    C.
    Inconel
    D.
    Constantan

  11. Which of the following alloys does not contain nickel ?

  12. A.
    Chlorinet - 2 alloy
    B.
    Monel
    C.
    Inconel
    D.
    Babbit metal

  13. An elastic behaviour of materials is expressed in terms of

  14. A.
    hysterisis loop area
    B.
    stress-strain curve
    C.
    relaxation time
    D.
    none of these

  15. Pure nickel is

  16. A.
    ferromagnetic above its curie point (i.e., 415°C).
    B.
    having h.c.p. crystal lattice.
    C.
    ferromagnetic at room temperature.
    D.
    not resistant to oxidation at high temperature.

  17. In drop forging process, the forging is done by dropping the __________ at high velocity.

  18. A.
    hammer
    B.
    workpiece.
    C.
    die with hammer
    D.
    weight on hammer

  19. Which of the following is not an alloy of copper and tin ?

  20. A.
    Bell metal
    B.
    Gun metal
    C.
    Admiralty gun metal
    D.
    Monel metal