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Colligative Properties

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

ChemistryWhy is the freezing point of a solution lower than that of the pure solvent?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryIn which solution is the van’t Hoff factor likely to be less than 1 because of association of solute molecules?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryIf the osmotic pressure of a solution is to be increased while the temperature remains constant, which change will most directly achieve this?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryIn which situation will the observed molar mass of a solute be less than its true molar mass?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryDissolving 4 g of a non-dissociated solute in 200 g of water produces a freezing-point depression of 0.465 K. If Kf = 1.86 K kg mol−1, what is the molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 14Hard ChemistryWhen the molality of a solute is increased in a solution, with all other conditions unchanged, what happens to the elevation in boiling point?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Easy ChemistryWhich of the following statements about the osmotic pressure of a dilute solution is correct?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryIf the freezing point of a solution is 1.86 K lower than that of the pure solvent and Kf = 1.86 K kg mol−1, what is the molality of the non-dissociated solute?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryIf 0.5 mol of a solute is dissolved in 2 kg of solvent, what is the molality of the solution?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 14Easy ChemistryWhich pair will show the greatest difference in osmotic pressure at the same temperature and same molarity, assuming complete dissociation where applicable?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryIf the vapour pressure of a solution is p and that of the pure solvent is p⁰, what is the relative lowering of vapour pressure?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Easy ChemistryWhich colligative property is most suitable for determining the molar mass of a high-molar-mass protein?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryWhy does a red blood cell generally retain its size when placed in an isotonic solution?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Easy ChemistryIf a 0.1 m solution has a boiling-point elevation of 0.104 K and Kᵦ = 0.52 K kg mol⁻¹, what is the van’t Hoff factor i?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryAmong aqueous solutions of equal molality, assuming complete dissociation, which solute will have the highest van’t Hoff factor?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Easy ChemistryA solution shows an osmotic pressure of 0.615 atm at 25 °C. If R = 0.082 L atm mol⁻¹ K⁻¹, what is the approximate molarity of the non-dissociated solute?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryIf the number of effective solute particles doubles while molality and solvent remain the same, what happens to the freezing-point depression?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryWhich property depends only on the number of solute particles present in a solution and not on the chemical nature of the solute?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Easy ChemistryIf the freezing-point depression of a solution is 2.5 times the expected value for a non-dissociated solute, what is the value of the van’t Hoff factor i?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryWhy does the boiling point of a solution increase when a non-volatile solute is added?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Easy