Chemistry Question Bank

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.

In a solution of 7.8 g of benzene (C₆H₆) and 46 g of toluene (C₆H₅CH₃), the mole fraction of benzene is

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

Which of the following concentration factors affected by change in temperature?

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

An aqueous solution of urea containing 18g urea in 1500 cm3 of the solution has a density equal to 1.052 g/cm3. If the molecular weight of urea is 60, then the molality of the solution 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…

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

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

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

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)

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

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

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)

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

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 system that forms maximum boiling azeotrope is

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)

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

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

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

The vapour pressure lowering caused by the addition of 100 g of sucrose (molecular mass = 342) to 1000 g of water (if the vapour pressure of water at 250C is 23.8 mm Hg) is (AFMC 2012)

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

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)