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Chemical Engineering :: Chemical Engineering Basics-2

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

  2. A.

     5-10

    B.

     1000-1500

    C.

     120-500

    D.

     1500-3000


  3. Stress and strain are related by __________ elastic constants for a linearly elastic, homogeneous & isotropic material.

  4. A.

     One

    B.

     Two

    C.

     Three

    D.

     Four


  5. Pick out the wrong statement.

  6. A.

     Reflectivity of gases is very low

    B.

     Absorptivity for metals is very high

    C.

     Reflectivity for non-conducting materials is low

    D.

     Reflectivity of polished surfaces is very high


  7. Induced draft fans provided in large thermal power plant boilers have __________ blades.

  8. A.

     Forward curved

    B.

     Backward curved

    C.

     Double curved

    D.

     Radial or straight


  9. The temperature at which the magnetic property of iron disappears (i.e., it becomes non-magnetic) and its electrical conductivity & specific heat also changes, is called the 'Curie point', which is __________ °C.

  10. A.

     768

    B.

     908

    C.

     1400

    D.

     1539


  11. Cupola produces __________ iron.

  12. A.

     Pig

    B.

     Cast

    C.

     Wrought

    D.

     Carbon free


  13. Which of the following performance characteristics of a S.I engine is not affected by the front end volatility of the petrol used?

  14. A.

     Vapour locking

    B.

     Hot starting

    C.

     Spark plug fouling

    D.

     All of the above


  15. Diffusion co-efficient of a metal in a solid solution depends upon its

  16. A.

     Composition

    B.

     Temperature

    C.

     Both A & B

    D.

     Neither A nor B


  17. Which of the following is not an explosive?

  18. A.

     TNT

    B.

     CMC

    C.

     RDX

    D.

     Lead azide


  19. An ingot is hot forged to a 60% reduction in cross-section area. The percentage reduction in the volume for the above process is

  20. A.

     0

    B.

     60

    C.

     30

    D.

     20