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Stoichiometry

Stoichiometry
The reverse process of fractional crystallisation is called

Differential distillation
Absorption
Leaching
Stripping

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Stoichiometry
The heat of vaporisation __________ with increase in pressure.

Decreases
Becomes zero at critical pressure
Increases
Both B and C

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Stoichiometry
One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH₄ + 2O₂ → CO₂ + 2H₂O. Both the reactants and products are in gas phase. ΔH°298 = - 730 kJ/mole of methane. Mole fraction of water vapour in the product gases is about

0.40
0.67
0.19
0.33

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Stoichiometry
Equal masses of CH₄ and H₂ are mixed in an empty container. The partial pressure of hydrogen in this container expressed as the fraction of total pressure is

8/9
1/9
1/2
5/9

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Stoichiometry
A saturated vapor on being compressed would

Form wet steam
Neither A nor B
Both A & B
Condense

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Stoichiometry
Ideal solution is formed, when its components have zero

Heat of mixing
Volume change
Both A & B
Neither A nor B

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