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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Q. Variation of vapor pressure with temperature can be calculated using Clausius-Clapeyron equation, which assumes that the

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Q. Heat of neutralisation of HCl and NaOH is - 57.46 kJ/Kg mole. The heat of ionisation of water will be __________ kJ/Kg mole.

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Q. The heat evolved in the combustion of benzene is represented by the equation:

C₆H₆ + 7.5 O₂ = 6CO₂ + 3H₂O, ΔH = 3264.6 kJ/kg. mole

The heat energy change, when 39 gm of C₆H₆ is burnt in an open container, will be __________ kJ/kgmole.

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Q. Pick out the wrong statement about the recycle stream in a process.

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Q. Methane is mixed with stoichiometric proportion of oxygen and completely combusted. The number of additional specifications required to determine the product flow rate and composition is

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Q. An aqueous solution of 2.45% by weight H₂SO₄ has a specific gravity of 1.011. The composition expressed in normality is

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