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Class 11 Mcq

Class 11 Chemistry के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

Chemistry500 mL of a solution contains 0.2 mol solute. What is the molarity?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2EasyChemistryHow many moles of solute are present in 400 mL of 0.25 M solution?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2EasyChemistryIn an aqueous solution the mole fraction of solute is 0.01. What is the approximate molality?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 5MediumChemistryA 60 percent by mass aqueous ammonia solution is given. What is the approximate mole fraction of ammonia?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 4MediumChemistryA solution has 40 percent solute by mass. The molar mass of solute is 80 and solvent is water. What is the approximate mole fraction of solute?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 4MediumChemistryA solution has 10 percent solute by mass and total mass 500 g. What is the mass ratio of solute to solvent?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 3EasyChemistryA solution has molality 2. If the mass of solvent is 250 g what are the moles of solute?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2EasyChemistryIf the mole fraction of solute in a solution is 0.4 what is the mole ratio of solute to solvent?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2EasyChemistryIn a solution the mole ratio of solute to solvent is 2 to 3. What is the mole fraction of solute?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2EasyChemistryA water sample has calcium ion concentration 40 ppm. What mass of calcium ions is present in 5 L of the sample?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 3EasyChemistryA solution contains 0.001 g solute per cubic centimetre. What is the mass by volume percent?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 3EasyChemistryHow much water should be added to 100 mL of 5 M solution to prepare a 0.5 M solution?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 4MediumChemistryHow much water should be added to 1 L of 2 M solution to make the final molarity 0.8 M?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 4MediumChemistryHow much water should be added to 300 g of a 20 percent solution to make the mass percent 12?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 4MediumChemistryHow much pure solute should be added to 200 g of 10 percent solution to make the mass percent 20?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 4MediumChemistryA solution has molarity 3 M and mass percent 12. The molar mass of solute is 40. What is the density of the solution?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 5HardChemistryA solution has 20 percent by mass solute and density 1.2 g mL−1. The molar mass of solute is 40. What is the molarity?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 5HardChemistryA 15 percent by mass glucose solution is given. What is its approximate molality?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 4MediumChemistryA 30 percent by mass urea solution is given. What is the approximate mole fraction of urea?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 4MediumChemistryAn aqueous solution has molality 5. What is the approximate mole fraction of solute?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 5Medium