When a non-volatile solute is dissolved in a solvent. The relative lowering of vapor pressure is equal to 

Van't Hoff factor is 

The solubility of a gas in a liquid increase with 

Which of the following solution would exhibit abnormal colligative properties?

The number of moles of sodium hydroxide present in 2.5 L and 0.5 M aqueous solution will be

Maximum freezing point will be for 1 molal solution of assuming equal ionization in each case:

The solution which has the lowest freezing point is 

The vant Hoff factor 'i' accounts for

The azeotropic mixture of water and ethanol boils at 78.15$°$C. When this mixture is distilled, it is possible to obtain-

Which of the following changes with a change in temperature?

When the solute is present in trace quantities the following expression is used

Increasing the temperature of an aqueous solution will cause

During depression in freezing point in a solution, the following are in equilibrium.

When the attraction between A — B is more than that of A-A and B— B, the solution will show deviation from Raoult’s law

Can an egg be inserted into a bottle with a narrow neck without distorting its shape?

1) Yes

2) No

3) Maybe

4) Insufficient data is there

An aqueous solution of 2% non-volatile solute exerts a pressure of 1.004 bar at the normal boiling point of the solvent. Molar mass of the solute would be -

Heptane and octane form an ideal solution. At 373 K, the vapour pressures of the two liquid components are 105.2 kPa and 46.8 kPa respectively. The vapour pressure of a mixture of 26.0 g of heptane and 35 g of octane would be -

A 5% solution (by mass) of cane sugar in water has freezing point of 271K. Freezing point of 5% glucose in water would be -

(freezing point of pure water is 273.15 K)

If the density of lake water is 1.25g mL^–1 and contains 92 g of Na⁺ ions per kg of water, then the molality of Na⁺ ions will be-

The Vapour pressure of water at 293 K is 17.535 mm Hg. The vapour pressure of water at 293 K when 25 g of glucose is dissolved in 450 g of water is-

Benzene and toluene form ideal solution over the entire range of composition. The vapour pressure of pure benzene and toluene at 300 K are 50.71 mm Hg and 32.06 mm Hg respectively. The mole fraction of benzene in vapour phase, if 80 g of benzene is mixed with 100 g of toluene would be -

 $$\begin{gathered} 1. 2.76 \times {10}^{-3} \mathrm{atm} \\ 2. 5.39 \times {10}^{-4} \mathrm{atm} \\ 3. 5.27 \times {10}^{-3} \mathrm{atm} \\ 4. 3.19 \times {10}^{-3} \mathrm{atm} \end{gathered}$$

Mole fraction of benzene in solution containing 30% by mass in carbon tetrachloride is

What is the mass of urea (NH₂CONH₂) required in making 2.5 kg of 0.25 molal aqueous solution?

What is the molarity of KI if density of 20% (mass/mass) aqueous KI is 1.202 g mL^-1?

H₂S, a toxic gas with rotten egg like smell, is used for the qualitative analysis. If the solubility of H₂S in water at STP is 0.195 molal, what is the Henry’s law constant?

Henry’s law constant for CO₂ in water is 1.67 × 10⁸ Pa at 298 K. What is the quantity of CO₂ in 500 mL of soda water when packed under 2.5 atm CO₂ pressure at 298 K?

Boiling point of water at 750 mm Hg is 99.63°C. How much sucrose is to be added to 500 g of water such that it boils at 100°C?

 ( K_b H₂O = 0.52 K kg mol⁻¹)

What is the mass of ascorbic acid (Vitamin C, C₆H₈O₆) to be dissolved in 75 g of acetic acid to lower its melting point by 1.5°C? K_f = 3.9 K kg mol⁻¹.

What is the osmotic pressure exerted by a solution prepared by dissolving 1.0 g of polymer of molar mass 185,000 in 450 mL of water at 37°C?