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

ChemistryIf the apparent molar mass of a solute approaches its true molar mass on dilution, what does this indicate?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Hard ChemistryFor two non-electrolyte solutions having the same molality, which solution will show the greater depression in freezing point?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 18Easy ChemistryIf 1 g of a solute dissolved in 100 g of a solvent produces a boiling-point elevation of 0.1 K, what boiling-point elevation will be produced when 2 g of the same solute is dissolved in 200 g of the same solvent? Assume the solutions behave ideally.Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 12Medium ChemistryIn molar-mass determination, colligative properties depend mainly on which factor?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 18Easy ChemistryIf the freezing-point depression is mistakenly measured as lower than its true value, what is the mathematical effect on the calculated molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium ChemistryIn an experiment, the mass of the solvent is accidentally recorded as higher than its actual value. How will the molar mass calculated from freezing-point depression be affected?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium ChemistryWhen a solute is very sparingly soluble in a solvent, what should be checked most carefully before determining its molar mass by a colligative-property method?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium ChemistryIn the boiling-point-elevation method for determining the molar mass of an unknown solute, which quantity is measured directly?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Easy ChemistryA solution has higher osmotic pressure than another solution at the same temperature. If both contain the same mass of solute, what is the most suitable conclusion about the first solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium ChemistryDue to association, the apparent molar mass is 180 g mol⁻¹, while the true molar mass is 90 g mol⁻¹. What is the van’t Hoff factor?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 18Medium ChemistryWhich is the correct relation for molar-mass determination using relative lowering of vapour pressure?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium ChemistryIf 0.5 g of a solute in 250 mL solution gives an osmotic pressure of 0.82 atm at 27 °C, find its molar mass. Use R = 0.082 L atm K⁻¹ mol⁻¹.Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium ChemistryFor molar-mass determination of a non-electrolyte solute, which statement is correct?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Easy ChemistryIf a solute completely dissociates into three ions in solution, how will its apparent molar mass compare with its true molar mass?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 18Medium ChemistryA solute has a true molar mass of 60 g mol⁻¹, but freezing-point depression gives an apparent molar mass of 30 g mol⁻¹. What is the van’t Hoff factor?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 18Medium ChemistryWhich method often needs very precise measurement because the temperature change is very small?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium ChemistryIf the molar mass of an acid in benzene, determined from freezing-point depression, is nearly double the expected value, what does it indicate?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 18Medium ChemistryWhich assumption is necessary while determining molar mass by relative lowering of vapour pressure?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 18Medium ChemistryA 1 L solution is prepared from 3.6 g of a solute. At 300 K, its osmotic pressure is 0.369 atm. If the solute undergoes 25% dimerization, what is its approximate true molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Hard ChemistryAn AB₂ solute has a van’t Hoff factor of 2.6, and its true molar mass is 156 g mol⁻¹. What are its observed molar mass and degree of dissociation?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 17Hard