Solutions

Class 12 · Chemistry

105 questions32 easy46 medium27 hard

Sample Questions

Q1.The experimentally determined molar mass of a solute is higher than the true value when the solute undergoes:

ADissociation
BAssociation
CIonisation
DHydrolysis

Q2.Which of the following is an example of a solid solution?

AOxygen dissolved in water
BEthanol dissolved in water
CCopper dissolved in gold
DCamphor in nitrogen gas

Q3.For a non-ideal solution showing negative deviation from Raoult's law, which of the following is true?

AΔmixH > 0, ΔmixV > 0
BΔmixH = 0, ΔmixV = 0
CΔmixH < 0, ΔmixV < 0
DΔmixH < 0, ΔmixV > 0

Q4.Ethanoic acid dimerises in benzene primarily because:

ABenzene is a polar solvent
BBenzene has a low dielectric constant, favouring hydrogen bond-mediated dimerisation
CEthanoic acid is non-polar
DBenzene catalyses the dimerisation reaction

Q5.Heptane and octane form an ideal solution. At 373 K, their vapour pressures are 105.2 kPa and 46.8 kPa respectively. The vapour pressure of a mixture of 26.0 g of heptane (M = 100) and 35 g of octane (M = 114) is:

A73.2 kPa
B58.5 kPa
C152 kPa
D95 kPa

Q6.This is a sample question to preview what you'll get in the full practice test...

A. Option one
B. Option two
C. Option three
D. Option four

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Concepts Covered

Abnormal Molar MassesAssociation and DissociationAzeotropesColligative PropertiesConcentration UnitsDepression of Freezing PointElevation of Boiling PointHenry's LawIdeal SolutionsIsotonic SolutionsMass PercentageMolalityMolarityMole FractionNegative DeviationNon-ideal SolutionsOsmotic PressureParts Per MillionPositive DeviationRaoult's LawRelative Lowering of Vapour PressureReverse OsmosisSolubilityTypes of SolutionsVan't Hoff FactorVapour Pressure

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