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Chemical Engineering :: Chemical Engineering Basics-2

  1. Machinability of hard alloys & tool steels is improved by

  2. A.

     Spherodising

    B.

     Annealing

    C.

     Tempering

    D.

     Normalising

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  3. The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.

  4. A.

     60 - 100

    B.

     400 - 700

    C.

     1200 -1500

    D.

     2000 - 2300

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  5. Gas turbine normally employs a constant __________ cycle.

  6. A.

     Pressure

    B.

     Temperature

    C.

     Volume

    D.

     None of these

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  7. The substance used as a smoke screen in warfare is

  8. A.

     C₂H₂

    B.

     SiCl₄

    C.

     P₂O₅

    D.

     PCl5

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  9. Old cycle handles are coated with nickel using

  10. A.

     Cementation

    B.

     Spray coating

    C.

     Galvanising process

    D.

     Tinning process

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  11. The activity of pure hydrogen gas at 1000°C and 5 atm pressure

  12. A.

     Is always less than 1

    B.

     Is always greater than 1

    C.

     Can be 5

    D.

     Depends on the choice of the standard state

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  13. If a nuclear reactor produces more fissile nuclear fuel than it consumes, then it is called a __________ reactor.

  14. A.

     Critical

    B.

     Breeder

    C.

     Fertile

    D.

     Heterogenous

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  15. Grey cast iron (used for making underground water pipes and manhole covers) as compared to steel has higher

  16. A.

     Ductility

    B.

     Impact strength

    C.

     Machinability

    D.

     Melting point

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  17. A common disinfectant used in village wells for disinfection of water is

  18. A.

     Free chlorine

    B.

     Bromine

    C.

     Iodine

    D.

     Potassium permanganate

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  19. Use of water as a manometric liquid suffers from the disadvantage of its

  20. A.

     Low vapour pressure

    B.

     Corrosive nature

    C.

     High vapour pressure

    D.

     High boiling point

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