EXAMIANS
Refluxing of part of the distillate in a fractionating column is a 'recycling operation', aimed primarily at
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The forces causing the vaporisation of liquid are derived from the Kinetic energy of translation of its molecules. The heat of vaporisation
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The heat of adsorption of a gas caused by Van der Walls forces of attraction and capillarity is equal to the heat of
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A gas at 0°C is cooled at constant pressure until its volume becomes half the original volume. The temperature of the gas at this state will be
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If 1.5 moles of oxygen combines with aluminium to form Al2O₃, then the weight of aluminium (atomic weight = 27 ) used in this reaction is __________ gm.
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For any system, the __________ heat of solution is dependent on the temperature and the adsorbate concentration.
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The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. The temperature at which the above mixture will exert a pressure of one standard atm. is
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The heat capacity of a solid compound is calculated from the atomic heat capacities of its constituent elements with the help of the
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Avogadro's number is equal to
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One kg of saturated steam at 100°C and 1.01325 bar is contained in a rigid walled vessel. It lias a volume of 1.673 m³. It cools to 98°C ; the saturation pressure is 0.943 bar ; one kg of water vapour under these conditions has a volume of 1.789 m³. The latent heat of condensation (kJ/kg⁻¹ ) under these conditions is
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