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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

0.58
0.5
1.72
0.2

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Stoichiometry
For an ideal gas, the compressibility factor

Decreases with pressure rise
Is unity at Boyle's temperature
Zero
Is unity at all temperature

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Stoichiometry
Cp/Cv for monoatomic gases is

1.66
1.99
1.44
1

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Stoichiometry
With increase in temperature, the surface tension of water

Increases linearly
Increases
Decreases
Remains constant

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Stoichiometry
The temperature at which real gases obey the ideal gas law over a wide range of pressure is called the __________ temperature.

Reduced
Boyle
Inversion
Critical

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Stoichiometry
A saturated vapor on being compressed would

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

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