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Chemical Engineering :: Chemical Engineering Basics-2

  1. Which of the following is not used as a fuel in rocket propellaht ?

  2. A.

     Liquid hydrogen

    B.

     Liquid oxygen

    C.

     Liquid hydrazine

    D.

     Kerosene oil


  3. Toughness of a material is measured by the

  4. A.

     Vicker's hardness test

    B.

     Scratch test

    C.

     Universal testing machine

    D.

     Notched bar test


  5. Fatigue resistance of a material is measured by the

  6. A.

     Elastic limit

    B.

     Ultimate tensile strength

    C.

     Young's modulus

    D.

     Endurance limit


  7. The stress at which a metal fails by fatigue lies

  8. A.

     Near the fracture point of the stress-strain curve

    B.

     In the plastic range

    C.

     In the elastic range

    D.

     None of these


  9. Pick out the wrong statement. If the net positive suction head (NPSH) requirement of a pump is not satisfied, then

  10. A.

     It will deliver low discharge of liquid

    B.

     Its efficiency will not be affected

    C.

     It will not develop sufficient head to raise water

    D.

     It will be cavitated


  11. The ratio of coil diameter to wire diameter of a spring is called the spring

  12. A.

     Index

    B.

     Deflection

    C.

     Form co-efficient

    D.

     None of these


  13. Pick out the wrong statement about a fast breeder reactor.

  14. A.

     Uses molten sodium as moderator

    B.

     Converts fertile fuel into fissile fuel

    C.

     Requires highly enriched fuel

    D.

     Produces more fuel than it consumes


  15. Coke is added in the blast furnace to

  16. A.

     Reduce & melt the iron ore

    B.

     Increase the fluidity of slag

    C.

     Remove sulphur & phosphorus from molten metal

    D.

     None of these


  17. Castability of aluminium is increased by the addition of __________ in it.

  18. A.

     Silicon

    B.

     Manganese

    C.

     Bismuth

    D.

     Lead


  19. Speed of a submarine in deep sea & that of an aeroplane is measured by a/an

  20. A.

     Pitot tube

    B.

     Hot wire anemometer

    C.

     Rotameter

    D.

     Stroboscope