Some Basic Concepts of Chemistry

Class 11 · Chemistry

95 questions32 easy42 medium21 hard

Sample Questions

Q1.The molarity of ethanol in water when its mole fraction is 0.040 (density of water = 1 g/mL) is approximately:

A2.31 M
B0.40 M
C4.0 M
D1.15 M

Q2.How much copper can be obtained from 100 g of CuSO4 (molar mass = 159.5 g/mol)?

A63.5 g
B39.81 g
C31.75 g
D25 g

Q3.If the speed of light is 3.0 x 10^8 m/s, the distance covered by light in 2.00 ns is:

A0.6 m
B6.0 m
C0.06 m
D60 m

Q4.The law of definite proportions was given by:

ADalton
BLavoisier
CProust
DGay Lussac

Q5.Which of the following is a heterogeneous mixture?

ASugar solution
BAir
CMixture of salt and sand
DVinegar

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

Atomic MassAverage Atomic MassAvogadro's NumberClassification of MatterConcentration TermsDalton's Atomic TheoryDimensional AnalysisEmpirical FormulaFormula MassImportance of ChemistryLaws of Chemical CombinationLimiting ReagentMass PercentMolalityMolar MassMolarityMole ConceptMole FractionMolecular FormulaMolecular MassNature of MatterPercentage CompositionProperties of MatterSI UnitsScientific NotationSignificant FiguresStates of MatterStoichiometry

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