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Chemical Engineering :: Chemical Engineering Basics-2

  1. Superheating of steam is done at constant

  2. A.

     Enthalpy

    B.

     Entropy

    C.

     Pressure

    D.

     Volume

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  3. Pick out the wrong statement.

  4. A.

     The X-rays can not be deflected by electric field unlike cathode rays

    B.

     The intensity of X-rays can be measured by ionisation current produced due to the ionisation of gas by X-rays

    C.

     The quality of X-rays can be controlled by varying the anode-cathode voltage

    D.

     Crystal structure of a material can be studied by an electron microscope

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  5. Gas carrying pipelines are best joined by

  6. A.

     Nuts & bolts

    B.

     Rivetting

    C.

     Welding

    D.

     None of these

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  7. Out of the following, the rays having the lowest wavelength is the

  8. A.

     Radio waves

    B.

     Ultrasonic waves

    C.

     Infra red rays

    D.

     X-rays

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  9. In Newton's law of viscosity, which states that the shear stress is proportional to the __________ Co-efficient of viscosity is called dynamic or absolute viscosity(where, V = velocity, Vg = velocity gradient ).

  10. A.

     V²

    B.

     1/V²

    C.

     1/Vg

    D.

     Vg

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  11. Galena is an ore of

  12. A.

     Iron

    B.

     Copper

    C.

     Lead

    D.

     Aluminium

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  13. Galvanic corrosion

  14. A.

     Occurs in a bimetal couple

    B.

     Occurs in highly stressed metallic parts only

    C.

     Is exemplified by caustic embrittlement of boiler tubes

    D.

     Is also called dezincification

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  15. Volumetric composition of flue gas analysed with the Orsat apparatus is : CO₂ = 12%, O₂ = 8%, CO = nil, N₂ = 80%. This flue gas composition indicates that

  16. A.

     Pure oxygen has been used for combustion

    B.

     Nitrogen percentage in the fuel is very high

    C.

     Excess air has been used for combustion

    D.

     Hydrogen is not present in the fuel

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  17. Age hardening is connected with

  18. A.

     Babbit metal

    B.

     Gun metal

    C.

     Stainless steel

    D.

     Duralumin

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  19. The main charge in blast furnace is usually

  20. A.

     Iron ore & coke

    B.

     Iron ore, coke & air

    C.

     Limestone, coke & iron ore

    D.

     Limestone, sand & iron ore

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