Q. Elements in a periodic table are arranged in order of their

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Q. For most salts, the solubility increases with rise in temperature, but the solubility of __________ is nearly independent of temperature rise.

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Q. 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.

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Q. If a solution of eutectic composition is cooled, __________ reaching the eutectic temperature.

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Q. Which of the following is not a unit of length ?

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Q. The density of a gas 'X' is twice that of another gas 'Y'. If the molecular weight of gas 'Y' is 'M'; then the molecular weight of the gas 'X' will be

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Q. Saturated solution of benzene in water is in equilibrium with a mixture of air and vapours of benzene and water at room temperature and pressure. Mole fraction of benzene in liquid is xʙ and the vapour pressures of benzene and water at these conditions are pᵥᴮ and pᵥᵂ respectively. The partial pressure of benzene in air-vapour mixture is

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Q. pH value of a solution containing equal concentration of hydroxyl and hydrogen ions will be

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Q. The percentage ratio of the partial pressure of the vapor to the vapor pressure of the liquid at the existing temperature is

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Q. No cooling occurs, when an ideal gas undergoes unrestrained expansion, because the molecules

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Q. With increase in the solute concentration, the specific heat of aqueous solutions

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Q. The heat capacity of a substance is

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Q. The heat of solution depends upon the

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Q. The molar composition of a gas is 10% H₂, 10% O₂, 30% CO₂ and balance H₂O. If 50% H₂O condenses, the final mole percent of H₂ in the gas on a dry basis will be

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Q. The heats of vaporisation of CS₂, C₂H₅OH & H₂O are 26.8, 38.6 & 40.6 KJ/kg mole respectively. The order of decreasing inter-molecular forces in these liquids is

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Q. A liquid is in equilibrium with its vapor at its boiling point. On an average, the molecules in the liquid and gaseous phases have equal

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Q. Pure aniline is evaporating through a stagnant air film of 1 mm thickness at 300 K and a total pressure of 100 KPa. The vapor pressure of aniline at 300 K is 0.1 KPa. The total molar concentration under these conditions is 40.1 mole/m³ . The diffusivity of aniline in air is 0.74 x 10⁻⁵ m²/s.The numerical value of mass transfer co-efficient is 7.4 x 10⁻³. Its units are

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Q. 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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Q. The unit of dynamic viscosity is

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Q. In case of a solution (not of a solid in a liquid), whose total volume is more than the sum of volumes of its components in their pure states, solubility is

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