Q. "The equilibrium value of the mole fraction of the gas dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid surface". This statement pertaining to the solubility of gases in liquid is the __________ law.

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Q. Na₂SO₄. 10H₂O crystals are formed by cooling 100 Kg of 30% by weight aqueous solution of Na₂SO₄. The final concentration of the solute in the solution is 10%. The weight of crystals is

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Q. Which of the following gases will have the- highest kinetic energy per mole at the same pressure & temperature ?

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Q. What fraction of the total pressure is exerted by oxygen, if equal weights of oxygen and methane are mixed in an empty vessel at 25°C ?

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Q. On mixing 56 gm of CaO with 63 gm of HNO₃, the amount of Ca(NO₃)₂ formed is __________ gm.

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Q. The pressure under which liquid and vapor can co-exit at equilibrium is called the __________ vapor pressure.

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Q. The total number of atoms in 8.5 gm of NH₃ is __________ x 10²³.

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Q. The atomic weight of helium is 4 times that of hydrogen. Its diffusion rate as compared to hydrogen will be __________ times.

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Q. Osmotic pressure exerted by a solution prepared by dissolving one gram mole of a solute in 22.4 litres of a solvent at 0°C will be __________ atmosphere.

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Q. In general, the specific heats of aqueous solutions __________ with increase in the concentration of the solute.

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Q. 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

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Q. In a chemical process, the recycle stream is purged for

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Q. The viscosity of water at room temperature may be around one

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Q. The heat capacity of most substances is greater for the __________ state.

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Q. The temperature at which real gases obey the ideal gas law over a wide range of pressure is called the __________ temperature.

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Q. Unrestrained expansion of an ideal gas does not result in its cooling due to the reason that the gas molecules

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Q. Assuming applicability of ideal gas law, the pure component volume of the vapor in a saturated gas can be calculated from theoretical relationship. The volumetric composition of a vapor saturated gas is independent of the

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Q. Air at a temperature of 20°C and 750 mm Hg pressure has a relative humidity of 80%. What is its percentage humidity ? Vapour pressure of water at 20°C is 17.5 mm Hg.

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Q. One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH₄ + 2O₂ → CO₂ + 2H₂O. Both the reactants and products are in gas phase. ΔH°₂₉₈ = - 730 kJ/mole of methane. If the average specific heat of all the gases/vapour is 40 J/mole.K, the maximum temperature rise of the exhaust gases in °C would be approximately equal to

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Q. As per Kirchoff s equation, the heat of reaction is affected by the

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