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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।

ChemistryTwo solutions have equal osmotic pressure at the same temperature. If their solutes are non-dissociating, what can be said about their molar concentrations?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryIf the solute is volatile, why must the simple vapour-pressure-lowering relation for a non-volatile solute be used carefully?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryA student used Kf while calculating ΔTb. What is the mistake?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryThe osmotic pressure of a solution is 2 units. If its concentration is tripled at the same temperature, what will be the new osmotic pressure?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryWhich concentration unit is used directly in calculating freezing-point depression and boiling-point elevation?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryIf the vapour pressure of a pure solvent is 80 and the vapour pressure of the solvent in a solution is 72, what is the relative lowering of vapour pressure?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryWhat is the sum of the mole fraction of the solute and the mole fraction of the solvent in a binary solution?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryIf AB completely dissociates into A⁺ and B⁻, how will its colligative effect compare with that of a non-dissociating solute at the same molality?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryWhy does association of a solute decrease the observed depression in freezing point?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryWhat is the common basis of vapour-pressure lowering, freezing-point depression, boiling-point elevation, and osmotic pressure in a solution?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryTwo solutions of equal volume have concentrations 0.1 mol L⁻¹ and 0.2 mol L⁻¹. At the same temperature, which solution has the higher osmotic pressure?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryIf V and T are constant in the equation πV = nRT, osmotic pressure is proportional to which quantity?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryWhy is the osmotic-pressure method more suitable for determining the molar mass of large molecules?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryIf the mole fraction of a non-volatile solute is increased in a solution, what happens to the lowering of vapour pressure?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryIf the mole fraction of the solvent is 0.9 and the vapour pressure of the pure solvent is 100, what will be the vapour pressure of the solvent in the solution?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryAccording to Raoult's law for a non-volatile solute, the partial vapour pressure of the solvent is proportional to what?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryWhich of the following properties depends only on the number of solute particles present in a solution, not on their chemical nature?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryThe boiling-point elevation of a solution is 0.6 and the boiling point of the pure solvent is 373. What is the boiling point of the solution?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryA solution has i = 1. In this simple context, what can be inferred about the solute?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryIf i = 0.5, what type of behaviour does it indicate?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium