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Chemical Engineering :: Stoichiometry

  1. Which of the following is not a unit of pressure?

  2. A.

     Torr

    B.

     Newton/m²

    C.

     Parsec

    D.

     Ata, bar or pascal

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  3. Pick out the wrong unit conversion of temperature.

  4. A.

     °R = 273 + °F

    B.

     Temperature difference of 1°K = 1°C = 9/5 °F

    C.

     °C = (F- 32) x 0.555

    D.

     °F = (°C + 17.778) x 1.8

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  5. On mixing 56 gm of CaO with 63 gm of HNO₃, the amount of Ca(NO₃)₂ formed is __________ gm.

  6. A.

     82

    B.

     164

    C.

     41

    D.

     8.2

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  7. Degrees of freedom will be equal to the number of components for a system comprising of

  8. A.

     Only soluble liquid components

    B.

     Partially miscible two liquid components system having two phases

    C.

     Two liquid components and one solute (soluble in both the liquids)

    D.

     None of these

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  9. Saturated solution of benzene in water is in equilibrium with a mixture of air and vapours of benzene and water at room temperature and pressure. Mole fraction of benzene in liquid is xB and the vapour pressures of benzene and water at these conditions are PvB and Pvw respectively. The partial pressure of benzene in air-vapour mixture is

  10. A.

     PvB

    B.

     XB.PvB

    C.

     (Patm - Pvw)xB

    D.

     XB.Patm

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  11. According to the kinetic theory, the thermal conductivity of a monoatomic gas is proportional to

  12. A.

     T

    B.

     T0.5

    C.

     T1.5

    D.

     T2

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  13. How much O₂ can be obtained from 90 kg of water?

  14. A.

     32 kg

    B.

     80 kg

    C.

     64 kg

    D.

     90 kg

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  15. Which of the following has the smallest least effect on the solubility of a solute into the solvent?

  16. A.

     Nature of the solute

    B.

     Nature of the solvent

    C.

     Temperature

    D.

     Pressure

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  17. Atoms of the same element, but of different masses are called

  18. A.

     Isobars

    B.

     Isotones

    C.

     Isotopes

    D.

     None of these

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  19. pH value of H₂SO₄ (5% concentration) is

  20. A.

     5

    B.

     7

    C.

     > 7

    D.

     < 7

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