19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Van’t Hoff factor more than unity indicates that the solute in solution has
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?
Which of the following aqueous solutions has the highest boiling point?
Benzoic acid is dissolved in benzene, van’t Hoff factor will be
Van’t Hoff factor more than unity indicates that the solute in solution is (Manipal 2008)
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 molarity of a solution containing 5.0g of NaOH in 250 mL solution is (AFMC 2009)
Out of the compounds below, the vapour pressure of
The osmotic pressure is expressed in the unit of (VMMC 2010)
The system that forms maximum boiling azeotrope is
Mole fraction of the solute in a 1.00 molal aqueous solution is (AIPMT 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)
The colligative property is not represented by (AllMS 2013)
Which one of the following statements given below concerning properties of solution, describes a colligative effect? (AllMS 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)
The Van’t Hoff factors i for an electrolyte which undergoes dissociation and association in solvents are respectively
What would happen if a thin slice of sugar beet is placed in a concentrated solution of NaCl?
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
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
Two solutions A and B are separated by a semi- permeable membrane. As a result of osmosis, the level of solution A is found to rise. It implies that
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
The freezing point of equimolal aqueous solutions will be highest for
Which of the following colligative properties can provide molar mass of proteins (or polymers of colloids) with greater precision?
A solution of urea (mol. mass 56 g mol–1) boils at 100.18ºC at the atmospheric pressure. If Kf and Kb for water are 1.86 and 0.512 K kg mol–1 respectively, the above solution will freeze at