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Stoichiometry

Stoichiometry
Pure oxygen is mixed with air to produce an enriched air containing 50 volume % of oxygen. The ratio of moles of air to oxygen used is

1.72
0.58
0.5
0.2

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Stoichiometry
The heat of adsorption of a gas caused by Van der Walls forces of attraction and capillarity is equal to the heat of

Sum of A and B
Normal condensation
Difference of A and B
Wetting

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Stoichiometry
Number of gm moles of solute dissolved in one litre of a solution is called its

Molality
Equivalent weight
Molarity
Normality

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Stoichiometry
The viscosity of water at room temperature may be around one

Stoke
Poise
Both B & C
Centipoise

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Stoichiometry
The evaporation of aqueous solution of sugar causes its molarity to

Decrease.
increase.
Remain unchanged.
Either A or B; depends on the concentration of the solution.

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Stoichiometry
Mass number of an atom is the sum of the numbers of

Neutrons and protons
Protons and electrons
Neutrons and electrons
Both A & B

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MORE MCQ ON Stoichiometry

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