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Chemical Engineering :: Stoichiometry

  1. Elements in a periodic table are arranged in order of their

  2. A.

     Atomic number

    B.

     Mass number

    C.

     Atomic weight

    D.

     Metallic characteristics

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  3. For an ideal gas, the compressibility factor

  4. A.

     Decreases with pressure rise

    B.

     Is unity at all temperature

    C.

     Is unity at Boyle's temperature

    D.

     Zero

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  5. The effect of pressure on the heat capacity of the gases __________ is negligible.

  6. A.

     At pressure below one atmosphere

    B.

     Below the critical temperature

    C.

     Both A & B

    D.

     Neither A nor B

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  7. Gases diffuse faster compared to liquids because of the reason that the liquid molecules

  8. A.

     Are held together by stronger inter-molecular forces

    B.

     Move faster

    C.

     Have no definite shape

    D.

     Are heavier

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  9. The percentage ratio of the partial pressure of the vapor to the vapor pressure of the liquid at the existing temperature is

  10. A.

     Termed as relative saturation

    B.

     Not a function of the composition of gas mixture

    C.

     Called percentage saturation

    D.

     Not a function of the nature of vapor

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  11. The gravimetric (i.e., by weight) composition of a vapor saturated gas is independent of the

  12. A.

     Nature of both the gas & the liquid

    B.

     Temperature

    C.

     Total pressure

    D.

     None of these

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  13. Assuming applicability of ideal gas law, the pure component volume of the vapor in a saturated gas can be calculated from theoretical relationship. The volumetric composition of a vapor saturated gas is independent of the

  14. A.

     Nature of the liquid

    B.

     Nature of the gas

    C.

     Temperature of the liquid

    D.

     Total pressure

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  15. The heat capacity of most substances is greater for the __________ state.

  16. A.

     Solid

    B.

     Liquid

    C.

     Gaseous

    D.

     None of these

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  17. Addition of a non-volatile solute to a pure solvent

  18. A.

     Increases its freezing point

    B.

     Increases its boiling point

    C.

     Decreases its freezing point

    D.

     Both B and C

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  19. In the reaction, Ca + 2H₂O = Ca(OH)₂ + H₂ ; what volume (c.c.) of hydrogen at STP would be liberated, when 8 gm of calcium reacts with excess water?
    (atomic weight of calcium = 40)

  20. A.

     4480

    B.

     2240

    C.

     1120

    D.

     0.4

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