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Stoichiometry

Stoichiometry
Volume occupied by one gm mole of a gas at S.T.P. is

22.4 litres
359 litres
22.4 c.c
22400 litres

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Stoichiometry
The vapour pressure of a solution (made by dissolving a solute in a solvent) is __________ that of the pure solvent.

More than
Either more or less; depends on the solvent
Less than
Equal to

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Stoichiometry
At what temperature, given mass of a gas that occupies a volume of 2 litres at N.T.P. will occupy a volume of 4 litres, if the pressure of the gas is kept constant?

273°C
100°C
200°C
273°K

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Stoichiometry
1 kg of calcium carbide (CaC₂) produces about 0.41 kg of acetylene gas on treatment with water. How many hours of service can be derived from 1 kg of calcium carbide in an acetylene lamp burning 35 litres of gas at NTP per hour?

5
10
20
15

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Stoichiometry
Addition of a non-volatile solute to a pure solvent

Both B and C
Increases its boiling point
Decreases its freezing point
Increases its freezing point

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Stoichiometry
Heat of transition is the heat evolved or absorbed, when a substance is converted from

Vapor to liquid
One allotropic form to another allotropic form
Solid to liquid
Vapor to solid

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