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Chemical Engineering :: Chemical Engineering Basics-2

  1. What happens, when SO₂ is passed through a solution of H₂S in water?

  2. A.

     Precipitation of sulphur takes place

    B.

     H₂SO₃ is formed

    C.

     Oleum is formed

    D.

     None of these

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  3. Which of the following is the most suitable abrasive for grinding high tensile strength materials?

  4. A.

     Silicon carbide

    B.

     Corundum

    C.

     Aluminium oxide

    D.

     Boron carbide

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  5. Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs.

  6. A.

     Enthalpy

    B.

     Relative humidity

    C.

     Wet bulb temperature

    D.

     Dew point temperature

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  7. Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs?

  8. A.

     Enthalpy

    B.

     Relative humidity

    C.

     Wet bulb temperature

    D.

     Dew point temperature

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  9. Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of

  10. A.

     Lumps

    B.

     Pellets

    C.

     Briquettes

    D.

     Sinter

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  11. The primary strengthening mechanism in 70 : 30 brass is the

  12. A.

     Solid solution strengthening

    B.

     Precipitation hardening

    C.

     Dispersion strengthening

    D.

     Order hardening

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  13. Which of the following hardness tests uses the depth of penetration caused by the indentor as the parameter for arriving at the hardness value of a material ?

  14. A.

     Shore sceleroscope test

    B.

     Vicker's hardness test

    C.

     Brinell hardness test

    D.

     Rockwell hardness test

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  15. The malleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the maximum malleability ?

  16. A.

     Lead

    B.

     Copper

    C.

     Aluminium

    D.

     Wrought iron

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  17. Specific gravity of hot metal (pig iron) is __________ times that of the blast furnace slag.

  18. A.

     2

    B.

     3

    C.

     0.8

    D.

     6

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  19. The pH value is the measure of hydrogen ion concentration in a solution. The term pH stands for the __________ in the solution.

  20. A.

     Power of hydrogen ion concentration

    B.

     Percentage of hydrogen ions

    C.

     Presence of hydrogen ions

    D.

     None of these

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