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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।

ChemistryA non-volatile solute lowers the freezing point of a pure solvent. What is the microscopic reason?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryWhy are lowering of vapour pressure and elevation of boiling point closely related?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryIf a 0.2 m urea solution has a freezing-point depression x, what will be the approximate freezing-point depression of an ideal 0.2 m calcium chloride solution?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryThe osmotic pressure of a solution is π at 300 K. If the concentration is kept constant and the temperature is raised to 600 K, what will be the ideal osmotic pressure?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryWhy is a very dilute solution preferred for determining molar mass using osmotic pressure?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 14Medium ChemistryThe experimental molar mass of a solute determined from osmotic pressure is greater than its actual molar mass. What behaviour does this mainly indicate?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 14Medium ChemistryTwo molecules associate to form one dimer. If the degree of association is 80%, what is the van’t Hoff factor?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Hard ChemistryThe normal molar mass of a solute is 120 g mol⁻¹, while its observed molar mass from the osmotic-pressure method is 60 g mol⁻¹. What is the van’t Hoff factor?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 14Medium ChemistryIf glucose, sodium chloride, and aluminium chloride are dissolved in three solutions of equal molality, what is the correct order of freezing-point depression under ideal conditions?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryIn an ideal dilute solution containing a non-volatile solute, which relation represents the relative lowering of vapour pressure?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryWhy does solvent flow opposite to the normal direction during reverse osmosis?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13Medium ChemistryA 0.2 m solution has a freezing-point depression of 0.186 K. If Kf = 1.86 K kg mol⁻¹, what is the van’t Hoff factor and what does it indicate?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13Medium ChemistryIn which condition is a red blood cell most likely to shrink?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13Easy ChemistryWhich of the following colligative properties is not directly applicable to a solution containing a volatile solute?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13Medium ChemistryIf a 0.1 m NaCl solution has an actual van’t Hoff factor i = 1.5 and Kb = 0.52 K kg mol−1 for the same solvent, what is the elevation in boiling point?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13Medium ChemistryWhich change is most suitable for lowering the vapour pressure of a solution when the solute is non-volatile?Class 12Chapter 01: Solutions4: Vapour PressureLevel 13Medium ChemistryWhich of the following statements about the osmotic pressure of a solution is correct?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13Medium ChemistryA 0.1 m solution has a freezing-point depression of 0.279 K. If Kf = 1.86 K kg mol−1, what is the van’t Hoff factor i?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13Medium ChemistryWhich of the following properties depends on the number of solute particles present in a solution rather than on the chemical nature of the solute?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13Easy ChemistryWhen the number of solute particles in a solution is increased, which group generally changes in the correct direction?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13Medium