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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 a 0.2 m solution contains 0.04 mol of solute and the mass of the solute is 4.8 g, what is its molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Easy ChemistryA 125 mL sample of a 0.04 M solution contains 0.9 g of solute. What is the molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryIf the elevation in boiling point is 0.312 K, K_b = 0.52 K kg mol⁻¹, the solvent mass is 100 g, and the solute mass is 3 g, what is the molar mass of the non-dissociated solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryFor a non-dissociated solute, K_f = 1.86 K kg mol⁻¹ and ΔT_f = 0.558 K. If 6 g of solute is dissolved in 250 g of solvent, what is its molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryIn a solution, the true molar mass of the solute is 100 g mol⁻¹, but the vapour-pressure method gives an observed molar mass of 50 g mol⁻¹. Which conclusion is correct?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 16Medium ChemistryIf 1.86 g of a non-electrolyte solute dissolved in 100 g of water produces a depression in freezing point of 0.186 K, what is its molar mass? Take K_f = 1.86 K kg mol⁻¹.Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryAn unknown solute forms 750 mL of a 0.02 M solution and the solution contains 2.7 g of the solute. What is its molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryIf 250 mL of a 0.01 M solution contains 0.75 g of solute, what is the molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryWhen 2.7 g of a solute is dissolved in 150 g of solvent, the boiling-point elevation is 0.156 K. If Kb = 0.52 K kg mol−1 and the solute is non-electrolytic, what is its molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryA non-dissociating solute weighing 4.8 g is dissolved in 300 g of water and produces a freezing-point depression of 0.372 K. What is the molar mass of the solute? Take Kf = 1.86 K kg mol−1.Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryA 100 mL solution is prepared from 1.0 g of a solute. At 300 K, its osmotic pressure is 0.615 atm and i = 1.25. What is the true molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryWhen 2.0 g of a solute is dissolved in 250 g of water, the freezing-point depression is 0.372 K. If the solute has i = 2, what is its true molar mass? Take Kf for water as 1.86 K kg mol−1.Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryIf the observed molar mass of a solute is 1.6 times its true molar mass, what is the van’t Hoff factor, i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 16Medium ChemistryIf the observed molar mass of a solute is 0.8 times its true molar mass, what is the van’t Hoff factor, i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 16Medium ChemistryThe molar mass obtained by the boiling-point elevation method is higher than the true molar mass. What is the most common reason?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 16Medium ChemistryThe molar mass of a solute determined by the freezing-point depression method is much lower than its true molar mass. Which reason is most probable?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 16Medium ChemistryA student mistakenly uses 200 g of solvent as 200 kg while calculating molar mass from a colligative-property measurement. What will happen to the calculated molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium ChemistryWhen 3 g of a solute is dissolved in 300 g of water, the depression in freezing point is 0.279 K. If the actual van’t Hoff factor is 1.5, what is the true molar mass? Take Kf for water as 1.86 K kg mol⁻¹.Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Hard ChemistryA 200 mL solution is prepared using 1.2 g of a solute. At 300 K, its osmotic pressure is 0.246 atm. If the solute forms dimers and its van’t Hoff factor is i = 0.5, what is the true molar mass?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Hard ChemistryThe observed molar mass of an AB₂-type solute is half of its true molar mass. What is the degree of dissociation?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 16Medium