Chemistry Question Bank

The empirical formula of a non-electrolyte is CH₂O. A solution containing 6g/L of the compound exerts the same osmotic pressure as that of 0.05 M glucose solution. The molecular formula of the compound is SOLUTIONS

Solutions A, B, C and D are respectively 0.1M glucose, 0.05 M NaCl, 0.05 M BaCl₂ and 0.1 M AlCl₃. Which one of the following pairs is isotonic?

The Van’t Hoff factors i for an electrolyte which undergoes dissociation and association in solvents are respectively

The freezing point of equimolal aqueous solutions will be highest for

Among 0.1 M solutions of urea, Na₃PO₄ and Al₂ (SO₄)₃, which is incorrect

If sodium sulphate is considered to be completely dissociated into cations and anions in aqueous solution, the change in freezing point of water fT , when 0.01 mole of sodium sulphate is dissolved in 1 kg of water, is…

The freezing point (in ºC) of solution containing 0.04g of AlCl₃ (mol. wt. 133) in 100g of water (Kf = 1.86 K kg mol–1) is

Four solutions of K₂SO₄ with the following concentration 0.1 m, 0.01 m, 0.001 m and 0.0001 m SOLUTIONS are available. The maximum value of van’t Hoff factor, i, corresponds to

At high altitude the partial pressure of oxygen is less than that at the ground level. This leads to

Which one of the following pairs will not form an ideal solution?

Which of the following concentration terms is/are independent of temperature?

In which mode of expression, the concentration of solution remains independent of temperature?

Which of the following is not an example of a solution?

Assertion: If one component of a solution obeys Raoult’s law over a certain range of composition, the other component will not obey Henry’s law in that range. Reason: Raoult’s law is a special case of Henry’s law.

A solution containing 10g per dm3 of urea(molecular mass = 60 g mol–1) is isotonic with a 5% solution of a non-volatile solute. The molecular mass of this non- volatile solute is

Exactly 1 g of urea dissolved in 75 g of water gives a solution that boils at 100.114°C at 760 torr. The molecular weight of urea is 60.1. The boiling point elevation constant for water is

A 5% solution (by mass) of cane sugar in water has freezing point of 271 K and freezing point of pure water is 273.15 K. The freezing point of a 5% solution (by mass) of glucose in water is

The vapour pressure of a solvent decreases by 10 mm of 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…

12g of urea is dissolved in 1 litre of water and 68.4 g of sucrose is dissolved in 1 litre of water. The lowering of vapour pressure of first case is

When acetone and chloroform are mixed together, hydrogen bonds are formed between them. Which of the following statements is correct about the solution made by mixing acetone and chloroform?

The volume of 10N and 4N HCl required to make 1L of 7N HCl are

The normality of 10% (weight/volume) acetic acid is

If molality of the dilute solution is doubled, the value of molal depression constant (Kf) will be(NEET 2017)

At 100ºC the vapor pressure of a solution of 6.5g of a solute in 100 g water is 732 mm. If Kb = 0.52, the boiling point of this solution will be (NEET 2016)

(ii) There will be no change in enthalpies on mixing the two components, i.e., mixing H