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

ChemistryIn 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 13MediumChemistryIn which of the following situations is the observed molar mass of a solute greater than its true molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 13HardChemistryAssuming complete dissociation, what is the effective molarity of a 0.05 M K₄[Fe(CN)₆] solution?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13HardChemistryA solution has a van’t Hoff factor, i = 2.5. If the solute is of the type AB₂ and dissociates into ions, what is its degree of dissociation?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryThe 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 0.1 M glucose solution and a 0.1 M NaCl solution are separated by a semipermeable membrane. If NaCl is completely dissociated, toward which solution will the net flow of water occur?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 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 13MediumChemistryIf 0.05 m Al₂(SO₄)₃ dissociates completely, what will be its effective molality?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryFor a salt of the type AB₂, the degree of dissociation is x. Which expression for the van’t Hoff factor i is correct?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryA solution contains 0.01 mol of a non-dissociated solute in 500 mL of solution. What is its osmotic pressure at 300 K?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryWhen 5 g of a non-dissociated solute is dissolved in 500 g of solvent, the boiling point rises by 0.052 K. If K_b = 0.52 K kg mol⁻¹, what is the molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 13MediumChemistryAmong aqueous solutions of equal molality, assuming complete dissociation, which solution will show the greatest depression in freezing point?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryA 0.1 m non-dissociated solution has a boiling-point elevation of 0.052 K. What will be the boiling-point elevation of a 0.1 m K₂SO₄ solution in the same solvent on complete dissociation?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13Medium

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