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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

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  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

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  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

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  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

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  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

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  11. Cupola produces __________ iron.

  12. A.

     Pig

    B.

     Cast

    C.

     Wrought

    D.

     Carbon free

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  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

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  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

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  17. Which of the following is not an explosive?

  18. A.

     TNT

    B.

     CMC

    C.

     RDX

    D.

     Lead azide

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  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

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