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Chemical Engineering :: Chemical Engineering Basics-2

  1. Thermal conductivity of a material does not depend upon its

  2. A.

     Mass

    B.

     Volume

    C.

     Surface area

    D.

     All of the above

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  3. A material in which the atoms are arranged regularly in some directions but not in others, is termed as 'mesomorphous material'; an example of which is

  4. A.

     Lead

    B.

     Glass

    C.

     Mica

    D.

     Silver

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  5. Steel containing low percentage of nickel, chromium & tungsten are termed as the __________ steel.

  6. A.

     Wrought

    B.

     Tool

    C.

     Alloy

    D.

     Plain carbon

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  7. Which of the following is termed as the boiler mounting ?

  8. A.

     Feed water pump

    B.

     Steam superheater

    C.

     Blow off cock

    D.

     Economiser

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  9. Which of the following is termed as the boiler mounting ?

  10. A.

     Superheater

    B.

     Economiser

    C.

     Blow off cock

    D.

     Feed pump

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  11. Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of

  12. A.

     Grashoff number

    B.

     Grashoff number & Reynolds number

    C.

     Reynolds number

    D.

     Grashoff number & Prandtl number

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  13. Window panes of aeroplanes are normally made of

  14. A.

     Perspex (PMMA)

    B.

     Teflon (PTFE)

    C.

     Bakelite (phenol formaldehyde)

    D.

     Polystyrene

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  15. Viscoelastic behaviour is observed in __________ materials.

  16. A.

     Non-crystalline organic polymeric

    B.

     Ceramic

    C.

     All crystalline

    D.

     All of the above

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  17. The value of y = cp/cv. at < 500°C for air & most common gases can be safely assumed to be

  18. A.

     0.8

    B.

     1

    C.

     1.4

    D.

     1.8

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  19. Electrolytes conduct electric current by

  20. A.

     The movement of ions

    B.

     The movement of molecules

    C.

     Allowing electrons to flow through them from cathode to anode

    D.

     Movement of electric charge through them

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