Q. Dry air is a mixture of

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Q. pH value of H₂SO₄ (5% concentration) is

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Q. Except for monoatomic gases, the molal heat capacity at constant volume for all gases is __________ Kcal/Kg mole.° K.

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Q. Heat of reaction is a function of the

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Q. Enthalpy of a vapor gas mixture may be increased by increasing the

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Q. The gravimetric (i.e., by weight) composition of a vapor saturated gas is independent of the

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Q. In the reaction, Ca + 2H₂O = Ca(OH)₂ + H₂ ; what volume (c.c.) of hydrogen at STP would be liberated, when 8 gm of calcium reacts with excess water ? (atomic weight of calcium = 40)

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Q. A vessel of volume 1000 m³ contains air which is saturated with water vapour. The total pressure and temperature are 100 kPa and 20°C respectively. Assuming that the vapour pressure of water at 20°C is 2.34 kPa, the amount of water vapour (in kg) in the vessel is approximately

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Q. Othmer chart is useful in estimating the heat of

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Q. The vapor pressure of water at 100°C is

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Q. With rise in temperature, the heat capacity of a substance

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Q. 1m³ is approximately equal to

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Q. Cᵥ for monoatomic gases is equal to(where, R = gas constant)

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Q. Unit of power is

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Q. Avogadro's number is equal to

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Q. The vapour pressure of a solution (made by dissolving a solute in a solvent) is __________ that of the pure solvent.

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Q. The amount of Zn (atomic weight = 65) required to form 224 c.c. of H₂ at N.T.P. on treatment with dilute H₂SO₄ will be __________ gm.

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Q. With rise in temperature, the solubility of ammonia in water at a fixed pressure

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Q. If the pH value of a solution changes by one unit, it implies that hydrogen ion concentration in the solution will change __________ times.

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Q. The temperature at which a real gas obeys Boyle's law is termed as the

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