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Chemical Engineering :: Stoichiometry

  1. The weight fraction of methanol in an aqueous solution is 0.64. The mole fraction of methanol XM satisfies

  2. A.

     XM < 0.5

    B.

     XM = 0.5

    C.

     0.5 < XM < 0.64

    D.

     XM ≥ 0.64

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  3. The pressure under which liquid and vapor can co-exit at equilibrium is called the __________ vapor pressure.

  4. A.

     Limiting

    B.

     Real

    C.

     Saturated

    D.

     Normal

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  5. A compound was found having nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. The formula of the compound is

  6. A.

     N₂O₄

    B.

     N₂O₅

    C.

     N₂O₃

    D.

     None of these

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  7. The molar composition of a gas is 10% H₂, 10% O₂, 30% CO₂ and balance H₂O. If 50% H₂O condenses, the final mole percent of H₂ in the gas on a dry basis will be be

  8. A.

     10%

    B.

     5%

    C.

     18.18%

    D.

     20%

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  9. A gaseous mixture contains 14 kg of N₂, 16 kg of O₂ and 17 kg of NH₃. The mole fraction of oxygen is

  10. A.

     0.16

    B.

     0.33

    C.

     0.66

    D.

     0.47

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