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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 substance has i = 0.25. Which complete association does this best match?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 7Easy ChemistryIn the osmotic-pressure method, from which ratio can i be understood directly?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 5Easy ChemistryK₂SO₄ is assumed to be 50% dissociated in a solution. What is the van’t Hoff factor i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 8Easy ChemistryAt the same molality, NaCl solution shows a freezing-point depression about 1.8 times that of glucose. What is the correct conclusion about NaCl?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 10Medium ChemistryIn a solution, CaCl₂ is 70% dissociated. What is i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 8Easy ChemistryIf a substance has i = 0.75 and undergoes only dimerisation, what is the degree of dimerisation?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 8Easy ChemistryWhich pair is correctly matched?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 4Easy ChemistryA student writes i = Mobs/Mtrue instead of the correct relation. What kind of mistake can this cause?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 6Easy ChemistryFor an AB₂ electrolyte, the observed molar mass is half its true molar mass. What is the degree of dissociation?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 10Medium ChemistryIf a solute undergoes 50% dimerisation, how many times the true molar mass will be observed?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 10Medium ChemistryA substance X dissociates in water according to X → 2Y + Z, and 40% of X dissociates. What is the van’t Hoff factor i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 8Easy ChemistryWhich statement correctly relates abnormal molar mass to colligative properties?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 4Easy ChemistryIf the relative lowering of vapour pressure is half the expected value for a normal solute, what is i approximately?Class 12Chapter 01: Solutions4: Vapour PressureLevel 6Easy ChemistryFor a 1:1 electrolyte, the observed molar mass is 0.8 times the true molar mass. What is the degree of dissociation?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 9Medium ChemistryIf i = 1.9 is obtained experimentally for a substance behaving like NaCl, producing two ions, what is the best conclusion?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 6Easy ChemistryA solute is 75% dimerised. What is the value of i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 7Easy ChemistryIn which situation is the molar mass calculated from relative lowering of vapour pressure most likely to be lower than the true value?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 6Easy ChemistryIf 0.01 mol of an electrolyte gives 0.024 mol of effective particles in water, what is i?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 6Easy ChemistryAmong solutions of equal molality, which gives the maximum depression in freezing point if dissociation is complete?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 5Easy ChemistryFor an AB₃ salt, i = 2.5 is observed. What is the degree of dissociation?Class 12Chapter 01: Solutions7: Abnormal Molecular MassLevel 9Medium