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Chemical Engineering :: Chemical Engineering Basics-2

  1. Cast iron contains __________ percent carbon.

  2. A.

     2.5

    B.

     3.75

    C.

     4.75

    D.

     5.25

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  3. The condition of diffraction from a crystal is given by

  4. A.

     nλ = 2d Sin θ

    B.

     λ = d Sin 2θ

    C.

     λ = 2d Sin 2θ

    D.

     nλ = d Sin θ

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  5. At absolute zero temperature, for any reaction involving condensed phases

  6. A.

     Δ G° = 0 , Δ H° = 0

    B.

     Δ H° = 0 , Δ S° = 0

    C.

     Δ S° = 0 , Δ E° = 0

    D.

     Δ S° = 0 , Δ Cp° = 0

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  7. Which of the following is resistant to the action of both heat & chemicals?

  8. A.

     Boro silicate glass

    B.

     Silica glass

    C.

     Soda lime glass

    D.

     None of these

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  9. Propulsion of rocket follows from the

  10. A.

     Newton's second law of motion

    B.

     Newton's third law of motion

    C.

     Law of projectiles

    D.

     Archimedes principle

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  11. For efficient performance of a blast furnace, the extent of reduction of Wustite (FeO) should be

  12. A.

     100% indirect reduction

    B.

     100% direct reduction

    C.

     50-60% indirect reduction

    D.

     30-40% indirect reduction

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  13. Though tin occurs lower than iron in the electrochemical series, yet it is coated on steel for corrosion protection, because of its

  14. A.

     Lower cost

    B.

     Abundant availability

    C.

     Resistance to vegetable acids as the tin plate are commercially used in 'canning' industry

    D.

     None of these

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  15. Magnesium addition to cast iron increases its

  16. A.

     Corrosion resistance

    B.

     Creep strength

    C.

     Ductility and strength in tension

    D.

     Hardness

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  17. The amount of different substances produced, when the same quantity of electricity is passed through different solutions are proportional to their

  18. A.

     Equivalent weight

    B.

     (equivalent weight)²

    C.

     Molecular weight

    D.

     (molecular weight)²

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  19. The magnitude of water hammer caused in pipe flow is independent of the

  20. A.

     Pipe length

    B.

     Fluid flow stoppage rate

    C.

     Fluid temperature

    D.

     Time of valve closure

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