19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
“Relative lowering in vapour pressure of solution containing non-volatile solute is directly proportional to mole fraction of solute.” This statement is
During freezing of a solution the following are in equilibrium
What happens to freezing point of benzene when naphthalene is added?
Osmotic pressure is proportional to
A semipermeable membrane
The concentration (in mol/L) of the solution having osmotic pressure 0.0821 atm at 300 K will be
The temperature at which 10% aqueous solution (w/V) of glucose will exhibit the osmotic pressure of 16.4 atm, is (R = 0.082 dm3 atm K–1 mol–1)
A 6% solution of urea is isotonic with
A solution containing 10g per dm3 of urea (molecular mass = 60g mol–1) is isotonic with a 5% solution of a non-volatile solute. The molecular mass of this non-volatile solute is
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?
Molarity of a given orthophosphoric acid solution is 3 M. Its normality is (KCET 2007)
Assertion: One molal aqueous solution of glucose contains 180g of glucose in 1kg water. Reason: Solution containing one mole of solute in 1000 g of solvent is called one molal solution. (AIIMS 2008)
The concentration (in mol/L) of the solution having osmotic pressure 0.0821 atm at 300 K will be (AFMC 2009)
Assertion: 1.575g H₂C₂O₄.2H₂O in 250 mL solution makes it 0.1 N. Reason : H₂C₂O₄.2H₂O is a dihydrate organic acid.
Calculate the mass of urea (NH₂CONH₂) required in making 0.25 molal aqueous solution using 2.5 L water. (Haryana PMT 2010)
Out of the compounds below, the vapour pressure of
What happens to freezing point of benzene when naphthalene is added? (OJEE 2010)
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)
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)
A solution has higher osmotic pressure than its standard solution. Which of the following term will be used for this solution? (OJEE 2012)
Which one of the following statements given below concerning properties of solution, describes a colligative effect? (AllMS 2013)
(ii) There will be no change in enthalpies on mixing the two components, i.e., mixing H
If molality of the dilute solution is doubled, the value of molal depression constant (Kf) will be(NEET 2017)
Which of the following pair of solutions are expected to be isotonic at the same temperature?