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Stoichiometry

Stoichiometry
__________ fuels require the maximum percentage of 'excess air' for complete combustion.

Solid
Nuclear
Gaseous
Liquid

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Stoichiometry
The molecules of a liquid which is in equilibrium with its vapor at its boiling point on an average have equal __________ in the two phases.

Total energy
Intermolecular forces
Kinetic energy
Potential energy

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Stoichiometry
Isotopes are atoms having the same

Number of neutrons
None of these
Mass number
Atomic mass

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Stoichiometry
At higher temperatures, molal heat capacities for most of the gases (at constant pressure) __________ with increase in temperature.

Increases
Decreases
Varies linearly
Does not vary

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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°K
273°C
100°C
200°C

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Stoichiometry
Refluxing of part of the distillate in a fractionating column is a 'recycling operation', aimed primarily at

Yield enhancement
None of these
Heat conservation
Product enrichment

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