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Chemical Engineering :: Chemical Engineering Basics-2

  1. The bolt is subjected to __________ when the nut is tightened by putting the washer beneath it.

  2. A.

     Tension

    B.

     Shear

    C.

     Compression

    D.

     Bending & tension


  3. Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of

  4. A.

     90% tungsten carbide and 10% cobalt

    B.

     70% aluminium oxide & 30% silica

    C.

     30% nickel, 15% chromium & 55% tungsten

    D.

     65% tungsten & 35% zirconium


  5. Steam condenser tubes are made of ad-mirability brass, in which percentage of zinc & copper are __________ respectively.

  6. A.

     70 & 30

    B.

     30 & 70

    C.

     50 & 50

    D.

     90 & 10


  7. In order to protect the aquatic creatures, the dissolved oxygen content in fresh water stream should never be less than __________ PPm.

  8. A.

     0.5

    B.

     1

    C.

     5

    D.

     20


  9. CANDU type nuclear reactor using natural uranium as fuel is the extensively used nuclear reactor because of the fact that the

  10. A.

     Specific fuel consumption is very low due to the use of heavy water

    B.

     Fuel cost is much lower than that used in pressurised water or boiling water reactor

    C.

     Heavy water is used both as coolant as well as moderator

    D.

     Both B and C


  11. Batch process is preferred over continuous process, when the

  12. A.

     Product yields and quality can not be achieved in continuous process, because of long residence time

    B.

     Sales demand of product is not steady

    C.

     Same equipment can not be used for several processes of the same nature

    D.

     All of the above


  13. Transformer cores are normally made from

  14. A.

     Soft ferrites

    B.

     High purity iron

    C.

     Grain oriented Fe-Si alloy

    D.

     Al-Ni-Co alloy


  15. The co-ordination number in simple cubic structure is

  16. A.

     4

    B.

     6

    C.

     8

    D.

     12


  17. L.D. (Linz-Donawitz) converter is used in the production of

  18. A.

     Copper

    B.

     Steel

    C.

     Zinc

    D.

     Aluminium


  19. The excess air required for the combustion of pulverised coal is of the order of about __________ percent.

  20. A.

     5

    B.

     15

    C.

     30

    D.

     45