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Chapter 01 Solutions

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

ChemistryIf 1 mole of solute is dissolved in 500 g of solvent and the van’t Hoff factor is 2, what is the effective molality?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryA 0.5 m non-dissociating solution has an elevation in boiling point of 0.26 K. In the same solvent, what will be the elevation for a 0.5 m solute with i = 3?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryFor a solute, the van’t Hoff factor (i) is observed to be 0.75. What type of particle change does this indicate?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryThe osmotic pressure of a solution becomes double at the same temperature. If i remains unchanged, what change must have occurred in concentration?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Easy ChemistryA solution has i = 2.5 and molality 0.2 m. If Kf = 1.86 K kg mol⁻¹, what is ΔTf?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryWhy is the osmotic-pressure method more useful than boiling-point elevation for finding the molar mass of a 0.01 M protein solution?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Hard ChemistryA 0.1 m solution shows a depression in freezing point lower than the expected value for a non-dissociated solute. What is the most suitable conclusion?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Hard ChemistryIf an electrolyte effectively produces 3.2 particles instead of the four particles expected from complete dissociation, how will its colligative effect compare with complete dissociation?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryWhy is reverse osmosis useful for obtaining drinking water from seawater?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryIf the relative lowering of vapour pressure is 0.10, what is the mole fraction of the solvent in an ideal solution containing a non-volatile solute?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Easy ChemistryFor the same solvent at the same temperature, which observation confirms that depression in freezing point is a colligative property?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryIf two solutions are isotonic, which statement is definitely true for them at the same temperature?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryWhich colligative property is not directly based on vapour-pressure measurement but requires a semipermeable membrane?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Easy ChemistryThe minimum pressure required to stop osmosis in a solution is 5 atm. What pressure is needed to carry out reverse osmosis?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryFor solutions of equal molality in the same solvent, which factor decides the comparison of ΔTb?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryA solution has a boiling-point elevation of 0.52 K, and Kb = 0.52 K kg mol⁻¹. If the solute is non-dissociating, what is the molality?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryUnder which condition will the van’t Hoff factor be very close to 1?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Easy ChemistryIf 0.1 M glucose and 0.1 M sodium sulfate solutions are at the same temperature, which will ideally have the higher osmotic pressure?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryOne mole of A₂B dissociates completely into 2A⁺ and B²⁻. What is the ideal van’t Hoff factor?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryIf the observed molar mass of a solute is twice its normal molar mass, what is the van’t Hoff factor and which process is indicated?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 14Hard