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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।

ChemistryAmong the following solutions of equal molality in the same solvent, which will have the lowest freezing point if dissociation is complete?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryIn a solution, the van’t Hoff factor of KCl is 1.8. If ideal complete dissociation gives a value of 2, what does this value indicate?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryAmong aqueous solutions of equal molality, assuming complete dissociation, which solute will produce the greatest depression in freezing point?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryWhy does the vapour pressure of a solvent decrease when a non-volatile solute is added?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryWhat type of flow through a semipermeable membrane is called osmosis?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13EasyChemistryWhich of the following statements correctly describes a colligative property?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13EasyChemistryTwo solutions have the same osmotic pressure at the same temperature. If both are ideal dilute solutions, which statement is correct?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryIf CH3COOH forms dimers in benzene, what happens to its observed molar mass?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13HardChemistryIn a solution of a non-volatile solute, the observed colligative effect is lower than the value predicted for ideal behaviour. What does this usually indicate?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13HardChemistryIn which situation is osmotic pressure more useful than freezing-point depression for determining molar mass?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13HardChemistryA solution contains 0.1 mol of NaCl, which dissociates completely into ions. At the same molality, how will the boiling-point elevation of the NaCl solution compare with that of a urea solution?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13HardChemistryIn a numerical problem on colligative properties, what should be done first to obtain the correct answer?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryIf two solutions have the same molality but the solute ionises in one of them, which solution will show the greater colligative effect?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryIf two non-electrolyte solutions have the same molality and the same solvent, how will their ΔT_f values compare?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryIf a solute completely dissociates into three ions in solution, what is the ideal van’t Hoff factor, i?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryWhich statement gives the correct understanding of colligative properties?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryIf 0.2 mol of a non-electrolyte solute is dissolved in 400 g of solvent and K_b = 0.5 K kg mol⁻¹, what is the elevation in boiling point, ΔT_b?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 16MediumChemistryIf 0.1 mol of a non-electrolyte solute is dissolved in 200 g of solvent and K_f = 1.8 K kg mol⁻¹, what is the depression in freezing point, ΔT_f?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 16MediumChemistryWhy is the freezing point of a solution lower than that of the pure solvent?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryWhy does the boiling point of a solution become higher than that of the pure solvent when a non-volatile solute is added?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15Medium