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Stoichiometry

Stoichiometry
Heat of __________ of a fuel is called its calorific value.

Vaporisation
Reaction
Formation
Combustion

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Stoichiometry
For a neutral solution (pH = 7), the value of[H⁺] [OH⁻] is equal to

< 1
1
> 1

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Stoichiometry
The density of a gas at N.T.P.is 'ρ'. Keeping the pressure constant (i.e. 760 mm Hg), the 3 density of the gas will become ¾ 0.75ρ at a temperature of __________ °K

400°
300°
273°
300°

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Stoichiometry
The vapor pressure of water at 100°C is

76 cms of Hg
760 mm wc
100N/m²
13.6 cms of Hg

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Stoichiometry
N₂ content in a urea sample was found to be only 42%. What is the actual urea content of the sample ? (molecular weight of urea = 60)

0.95
0.8
0.98
0.9

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Stoichiometry
The ratio of existing moles of vapor per mole of vapor free gas to the moles of vapor that would be present per mole of vapor free gas, if the mixture were saturated at the existing temperature & pressure, is termed as the

Relative humidity
Percentage saturation
Relative saturation
None of these

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