Q. A compound was found having nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. The formula of the compound is

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Q. The atomic heat capacities of all solid elements __________ with decrease in temperature.

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Q. Raoult's law states that 'the equilibrium vapor pressure that is exerted by a component in a solution is proportional to the mole fraction of that component'. This generalisation is based on the assumption that the

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Q. °API gravity of water at N.T.P. is about

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Q. In case of vapor-liquid equilibria, which of the following does not account for gas phase deviation from ideality?

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Q. If the pressure of a gas is reduced to half & its absolute temperature is doubled, then the volume of the gas will

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Q. The OH⁻ concentration in a solution having pH value 3 is

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Q. A solution having a pH value of 5 is less acidic than the one having a pH value of 2 by a factor of

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Q. The vapor pressure of the solvent decreased by 10 mm Hg, when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the mole fraction of the solvent, if the decrease in vapor pressure of the solvent is required to be 20 mm Hg. ?

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Q. Which of the following expressions defines the Baume gravity scale for liquids lighter than water ?

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Q. 2 litres of nitrogen at N.T.P. weighs __________ gms.

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Q. Which of the following is followed by an ideal solution ?

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Q. Cᵨ/Cᵥ for monoatomic gases is

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Q. One of the specific gravity scales is "Brix" (used speicifically for sugar solution). It is defined as

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Q. The reverse process of fractional crystallisation is called

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Q. The unit of specific heat at constant pressure, Cᵨ, in SI unit is

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Q. Two solutions A1 and A2 have pH value of 2 and 6 respectively. It implies that the solution

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Q. For water evaporating into usaturated air under adiabatic conditions and at constant pressure, the __________ remains constant throughout the period of vaporisation.

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Q. The molecular velocity of a real gas is proportional to (where, T = absolute temperature of the gas).

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Q. Pick out the wrong statement.

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