Chemistry Question Bank

A mixture of benzene and toluene forms

b b o cal C kg mol gm K K x x x

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

Which one of the following statements given below concerning properties of solution, describes a colligative effect? (AllMS 2013)

The colligative property is not represented by (AllMS 2013)

6.02 × 1020 molecules of urea are present in 100 mL of its solution. The concentration of solution is (NEET 2013)

A solution has higher osmotic pressure than its standard solution. Which of the following term will be used for this solution? (OJEE 2012)

pA and pB are the vapour pressure of pure liquid components A and B respectively of an ideal binary solution. If xA represents the mole fraction of component A, the total pressure of the solution will be (AIPMT 2012)

Mole fraction of the solute in a 1.00 molal aqueous solution is (AIPMT 2011)

A solution of two liquids boils at a temperature more than the boiling point of either of them. Hence, the binary solution shows (KCET 2011)

The system that forms maximum boiling azeotrope is

The osmotic pressure is expressed in the unit of (VMMC 2010)

Isotonic solutions are the solutions having the same (RPMT 2010)

What happens when an egg is kept in saturated solution of NaCl after removing its hard shell in dilute HCl? (OJEE 2010)