Q. 1 kg of calcium carbide (CaC₂) produces about 0.41 kg of acetylene gas on treatment with water. How many hours of service can be derived from 1 kg of calcium carbide in an acetylene lamp burning 35 litres of gas at NTP per hour ?

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Q. According to Raoult's law, "The vapor pressure exerted by component in a solution is proportional to the mole fraction of that component." Raoult's law is not applicable under the following assumption/condition.

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Q. Kinematic viscosity of 1 m² /second is equivalent to __________ stokes.

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Q. Internal energy of a substance comprises of the __________ energy.

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Q. 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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Q. The pressure of 'V' litres of a dry gas is increased from 1 to 2 kgf/cm² at a constant temperature. The new volume will become

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Q. 1 torr is equivalent to

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Q. Roult's law is obeyed by a __________ solution.

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Q. At standard conditions,

N₂ + 2O₂ ↔ 2NO₂; ΔG° = 100 kJ/mole
NO + 1/2O₂ ↔ 2NO₂; ΔG° = -35 kJ/mole

The standard free energy of formation of NO in kJ/mole is

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Q. For a reaction, X → Y, if the concentration of 'X' is tripled; the rate becomes nine times. The order of reaction is

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Q. The vapor pressure of liquids of similar chemical nature at any particular temperature __________ with increase in the molecular weight.

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Q. The vapor pressure of liquids (having similar chemical nature) at any specified temperature __________ with increasing molecular weight.

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Q. Mass number of an atom is the sum of the numbers of

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Q. Under conditions of equal reduced pressure and equal reduced temperature, substances are said to be in the 'corresponding states'. At equal reduced conditions i.e., at the corresponding state, the __________ of different gases are nearly the same.

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Q. A long cylinder and a sphere both of 5 cms diameter are made from the same porous material. The flat ends of cylinder are sealed. Both the cylinder and sphere are saturated with the same solution of sodium chloride. Later both the objects are immersed for a short and equal interval of time in a large tank of water which is well agitated. The fraction of salt remaining in the cylinder and the sphere are Xc and Xs respectively. Which of the following statement is correct ?

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Q. The temperature at which the second Virial co-efficient of a real gas is zero is called the

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Q. The hydroxyl ion (OH⁻) concentration in a solution having pH value 3 will be

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Q. Boiling point of a solution as compared to that of the corresponding solvent is

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Q. Real gases approach ideal behaviour at

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Q. 1 bar is almost equal to __________ atmosphere.

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