Q. On addition of 1 c.c. of dilute hydrochloric acid (1% concentration) to 80 c.c. of a buffer solution of pH = 4, the pH of the solution becomes

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Q. The weight fraction of methanol in an aqueous solution is 0.64. The mole fraction of methanol Xᴍ satisfies

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Q. Pick out the wrong statement.

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Q. In case of a ternery system involving two liquid components and a solute, the ratio of the concentration of the solute in the two phases at equilibrium is called the distribution co-efficient. The distribution co-efficient depends upon the

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Q. Solution made by dissolving equimolar amounts of different solutes in the same amount of a given solvent will have the

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Q. N₂ content in a urea sample was found to be only 42%. What is the actual urea content of the sample ? (molecular weight of urea = 60)

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Q. Specific gravity on API scale is given by the relation(where, G = specific gravity at 15.5°C).

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Q. S.T.P. corresponds to

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Q. With rise in pressure, the solubility of gases in solvent, at a fixed temperature

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Q. Pick out the wrong statement.

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Q. Vapor pressure of water at 100°C is about __________ bar.

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Q. At room temperature, the product [H⁺] [OH⁻] in a solution is 10⁻¹⁴ moles/litre. If, [OH⁻] = 10⁻⁶ moles/litre, then the pH of the solution will be

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Q. Molar heat capacity of water in equilibrium with ice at constant pressure is

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Q. If pH value of a solution is 8, then its pOH value will be

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Q. The chemical nature of an element is independent of

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Q. The heat change for the reaction, C(s) + 2S(s) → CS₂(l), is 104.2 kJ. It represents the heat of

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Q. A sample of well water contains 140 gm/m³ Ca²⁺ ions and 345 gm/m³ Na⁺ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO₃ in gm/m³ is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16)

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Q. The activity co-efficient of a solution, which accounts for the departure of liquid phase from ideal solution behaviour

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Q. Osmotic pressure of a dilute solution of a non volatile solute in a solvent obeying Raoult's law is proportional to the

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Q. In case of an unsaturated vapor-gas mixture, the humid volume increases with increase in the

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