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Vapour Pressure

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

ChemistryWhat is the correct meaning of ΔTb in the boiling-point elevation method?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18EasyChemistryIf the boiling point of a solution is higher than that of the pure solvent, which colligative property does this represent?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17EasyChemistryWhy is a non-volatile solute chosen in molar-mass determination based on vapour-pressure lowering?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17EasyChemistryWhich of the following colligative properties is particularly useful for determining the molar mass of a solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17EasyChemistryWhy is a non-volatile solute used in molar mass determination by vapour-pressure methods?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16EasyChemistryWhich relation is correct for a dilute solution containing a non-volatile solute?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryWhich of the following colligative properties decreases as the number of solute particles in a solution increases?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryIf the mole fraction of the solute in a solution is 0.05 and the vapour pressure of the pure solvent is 100 mmHg, what is the approximate vapour pressure of the solution, assuming the solute is non-volatile?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15MediumChemistryWhich colligative property is not directly based on vapour-pressure measurement but requires a semipermeable membrane?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryWhy are lowering of vapour pressure and elevation of boiling point closely related?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryWhich change is most suitable for lowering the vapour pressure of a solution when the solute is non-volatile?Class 12Chapter 01: Solutions4: Vapour PressureLevel 13MediumChemistryWhen the number of solute particles in a solution is increased, which group generally changes in the correct direction?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13MediumChemistryWhich of the following statements about elevation in boiling point is correct?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13EasyChemistryIf the vapour pressure of a pure solvent is 80 mmHg and that of the solution is 76 mmHg, what is the relative lowering of vapour pressure?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13EasyChemistryWhat happens to the vapour pressure of the solvent when the amount of a non-volatile solute in a solution is increased?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryWhy is the freezing point of a solution lower than that of the pure solvent?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryA solution has a relative lowering of vapour pressure of 0.10. If it contains 0.90 mol of solvent, approximately how many moles of solute are present, assuming a very dilute solution?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14MediumChemistryWhy does the boiling point of a solution increase when a non-volatile solute is added?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14EasyChemistryA solution has relative lowering of vapour pressure equal to 0.02. Assuming an ideal dilute solution, what is the mole fraction of solute?Class 12Chapter 01: Solutions4: Vapour PressureLevel 15MediumChemistryWhy is the boiling point of a solution higher than that of the pure solvent?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 15Easy