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Chemical Engineering :: Stoichiometry

Stoichiometry - Section 1
Stoichiometry - Section 2
Stoichiometry - Section 3
Stoichiometry - Section 4
Stoichiometry - Section 5
Stoichiometry - Section 6
Stoichiometry - Section 7
Stoichiometry - Section 8
Stoichiometry - Section-9

  1. CaCO3 contains __________ percent of Ca by weight.

    2. A.
    40
    B.
    48
    C.
    96
    D.
    12

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  2. Solutions which distil without change in composition are called

    3. A.
    ideal
    B.
    saturated
    C.
    supersaturated
    D.
    azeotropic

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  3. Gases having same reduced temperatures and reduced pressures

    4. A.
    deviate from ideal gas behaviour to the same degree.
    B.
    have nearly the same compressibility factor.
    C.
    both (a) and (b).
    D.
    neither (a) nor (b).

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

    5. A.
    Torr
    B.
    Newton/m2
    C.
    Parsec
    D.
    Ata, bar or pascal

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  5. The evaporation of aqueous solution of sugar causes its molarity to

    6. A.
    decrease. (b) increase.
    B.
    remain unchanged.
    C.
    either (a) or (b); depends on the concentration of the solution.

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  6. One Newton is equal to __________ dynes.

    7. A.
    102
    B.
    103
    C.
    104
    D.
    105

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  7. A very dilute solution is prepared by dissolving 'x1' mole of solute in 'x2' mole of a solvent. The mole fraction of solute is approximately equal to

    8. A.
    x1/x2
    B.
    x2/x1
    C.
    1 - (x1/x2)
    D.
    1/x2

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  8. An ideal gas can be liquified, because

    9. A.
    its molecular size is very small.
    B.
    its critical temperature is more than 0°C.
    C.
    forces operative between its molecules are negligible.
    D.
    it gets solidified directly without becoming liquid.

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  9. The rate of material __________ is zero in case of a steady state system.

    10. A.
    accumulation
    B.
    production
    C.
    input
    D.
    generation

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  10. A metal oxide is reduced by heating it in a stream of hydrogen. After complete reduction, it is found that 3.15 gm of the oxide has yielded 1.05 gm of the metal. It may be inferred that the

    11. A.
    atomic weight of the metal is 4.
    B.
    equivalent weight of the metal is 4.
    C.
    atomic weight of the metal is 2.
    D.
    equivalent weight of the metal is 8.

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