EXAMIANS
For the gaseous phase reaction, N₂ + O₂ ⇋ 2NO, ΔH = + 80 kJ/kg. mole; the decomposition of NO is favoured by
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A compound was found having nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. The formula of the compound is
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The OH⁻ concentration in a solution having pH value 3 is
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The pH value of a solution is 5.9. If the hydrogen ion concentration is decreased hundred times, the solution will be
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Atoms of the same element, but of different masses are called
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A butane isomerisation process produces 70 kmole/hr of pure isobutane. A purge stream removed continuously, contains 85% n-butane and 15% impurity (mole%). The feed stream is n-butane containing 1% impurity (mole%). The flow rate of the purge stream will be
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The vapor pressure of water at 100°C is
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At room temperature, the product [H⁺] [OH⁻] in a solution is 10⁻¹⁴ moles/litre. If, [OH⁻] = 10⁻⁶ moles/litre, then the pH of the solution will be
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The activity co-efficient of a solution, which accounts for the departure of liquid phase from ideal solution behaviour
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The evaporation of aqueous solution of sugar causes its molarity to
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