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Stoichiometry

Stoichiometry
The reverse process of fractional crystallisation is called

Absorption
Leaching
Stripping
Differential distillation

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Stoichiometry
Boiling point of a non-homogeneous mixture of immiscible liquids is __________ that of any one of its separate components.

Lower than
Either A or B; depends on the liquids
Equal to
Higher than

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Stoichiometry
S.T.P. corresponds to

1 atm. absolute pressure & 15.5°C
101.325 kPa gauge pressure & 15.5°C
760 torr & 0°C
760 mm Hg gauge pressure & 15.5°C

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Stoichiometry
Solution made by dissolving equimolar amounts of different solutes in the same amount of a given solvent will have the

None of these
Same elevation in boiling point
Elevation in boiling point in the ratio of their molecular weights
Different elevation in boiling point

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Stoichiometry
A vessel of volume 1000 m³ contains air which is saturated with water vapour. The total pressure and temperature are 100 kPa and 20°C respectively. Assuming that the vapour pressure of water at 20°C is 2.34 kPa, the amount of water vapour (in kg) in the vessel is approximately

34
20
17
25

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

Real
Limiting
Saturated
Normal

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