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5 Colligative Properties

Class 12 Chemistry के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

ChemistryIn which condition is a red blood cell most likely to shrink?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13EasyChemistryWhich of the following colligative properties is not directly applicable to a solution containing a volatile solute?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryIf a 0.1 m NaCl solution has an actual van’t Hoff factor i = 1.5 and Kb = 0.52 K kg mol−1 for the same solvent, what is the elevation in boiling point?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryWhich of the following statements about the osmotic pressure of a solution is correct?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryA 0.1 m solution has a freezing-point depression of 0.279 K. If Kf = 1.86 K kg mol−1, what is the van’t Hoff factor i?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryWhich of the following properties depends on the number of solute particles present in a solution rather than on the chemical nature of the solute?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13EasyChemistryWhen the number of solute particles in a solution is increased, which group generally changes in the correct direction?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryIn a solution, 30% of the solute particles form dimers. The observed molar mass will be how many times the true molar mass?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13HardChemistryWhich of the following statements about elevation in boiling point is correct?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13EasyChemistryIf the molality of a solution is 0.25 m, K_f = 1.86 K kg mol⁻¹, and the van’t Hoff factor is i = 2, what is the magnitude of the depression in freezing point?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryOne litre each of 0.1 M glucose and 0.1 M NaCl solutions are considered separately. Assuming complete dissociation of NaCl and equal temperature, whose osmotic pressure will be higher and by what factor?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryAn ideal solution has an osmotic pressure of 2.46 atm at 300 K. At the same concentration, what will its osmotic pressure be at 600 K?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryAssuming complete dissociation, what is the effective molarity of a 0.05 M K₄[Fe(CN)₆] solution?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13HardChemistryThe elevation in boiling point, ΔT_b, of a 0.1 m solute solution is lower than the value expected for a non-dissociated solute. What is the most probable reason?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13HardChemistryAmong aqueous solutions of equal concentration, which solute will have the highest van’t Hoff factor, assuming complete ionisation?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryIf the relative lowering of vapour pressure of a solution is 0.20 and the solute is non-volatile, what is the mole fraction of the solvent?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryA 0.4 m non-dissociated solution has a freezing-point depression of 0.744 K. What will be the freezing-point depression of a 0.2 m CaCl₂ solution in the same solvent if CaCl₂ dissociates completely?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13HardChemistryIn which solution is the van’t Hoff factor i most likely to be less than 1 because of association of solute molecules?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryDue to the salts dissolved in seawater, which statement is correct compared with pure water?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13EasyChemistryIn a solution, 20% of the solute particles associate in pairs to form dimers. What is the value of the van’t Hoff factor i?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13Medium