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Chemical Engineering Basics-2 - Section-1
  1. Ceramic tips for the cutting tool are prepared from __________ powder.

    2. A.

     Carbon
    B.

     Silicon carbide
    C.

     Aluminium oxide
    D.

     Tungsten

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  2. Ceramic tips for the cutting tool are prepared from __________ powder.

    3. A.

     Carbon
    B.

     Silicon carbide
    C.

     Aluminium oxide
    D.

     Tungsten

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  3. Even minute presence of impurities in copper impairs its electrical conductivity seriously. Electrolytic refinning of blister copper is resorted to, when

    4. A.

     Cheap electricity is available
    B.

     The precious metal content of copper is high
    C.

     There is a demand for ultrapure (99.99%) electrolytic copper
    D.

     All of the above

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  4. The most suitable material for a sewer for carrying storm water is

    5. A.

     Asbestos cement
    B.

     Cast iron
    C.

     Mild steel
    D.

     Cement concrete

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  5. If Reynolds number is greater than 1, then the

    6. A.

     Viscous force is larger than the inertia force
    B.

     Inertia force is larger than the viscous force
    C.

     Inertia force is larger than the surface tension force
    D.

     Inertia force is larger than the gravitational force

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  6. Property responsible for the talcum powder to cling to the skin is the

    7. A.

     Capillary action
    B.

     Adhesion
    C.

     Cohesion
    D.

     Surface tension

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  7. Increasing the temperature of a material makes it

    8. A.

     Harder
    B.

     Softer
    C.

     Tougher
    D.

     Stronger

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  8. Which of the following alloying elements is present in maximum percentage in high speed steel.

    9. A.

     Molybdenum
    B.

     Chromium
    C.

     Tungsten
    D.

     Vanadium

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  9. Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity)

    10. A.

     1/k
    B.

     k
    C.

     k²
    D.

     1/k²

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  10. Value of a material is usually considered as a relationship between

    11. A.

     Cost and profit
    B.

     Utility and appearance
    C.

     Utility and cost
    D.

     Reliability and utility

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