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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।

Chemistry10 g solute is dissolved in 190 g water. If molar mass of solute is 50 what is the molality?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 3MediumChemistry20 mL ethanol and 80 mL water are mixed. If the final volume is 95 mL, what is the volume percent of ethanol?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 3EasyChemistry1 L water contains 0.05 g lead ions. Assuming a very dilute solution what is the concentration in ppm?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 3EasyChemistry8 g sodium hydroxide is dissolved in water and final volume is made 200 mL. What is the molarity of the solution?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 3EasyChemistryA solution contains 500 g water and 34.2 g sucrose. What is the approximate mole fraction of sucrose?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 4MediumChemistryA solution has molarity 2.5 M and density 1.25 g mL−1. The molar mass of solute is 100 g mol−1. What is the mass percent of the solution?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 5HardChemistryIn an aqueous solution the mole fraction of water is 0.90. What is the approximate molality of the solute?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 5HardChemistryIn a solution the mole fraction of solute is 0.25. If molar mass of solute is 60 and solvent is water what is the approximate mass percent of solute?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 5HardChemistry200 mL of 3 M acid is mixed with 400 mL of 1.5 M same acid. Assuming final volume is 600 mL what is the molarity?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 4MediumChemistryWhat is the approximate molality of a 68 percent by mass aqueous nitric acid solution?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 6HardChemistryA 68 percent by mass nitric acid solution has density 1.42 g mL−1. What is its approximate molarity?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 6HardChemistryA 4 M sodium hydroxide solution has density 1.16 g mL−1. What is its approximate molality?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 6HardChemistryA 3 molal glucose solution has density 1.15 g mL−1. What is its approximate molarity?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 6HardChemistryIn an aqueous solution the mole fraction of solute is 0.05. If the solvent is water what is the approximate molality of the solution?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 5HardChemistryA solution has 8 percent mass percent of solute and total solution mass is 250 g. What is the mass of solvent?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 3MediumChemistryA solution has mole fraction of solute 0.6. What is the mole percent of solvent in the same binary solution?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 3MediumChemistryIn which situation is mass-volume percentage directly most useful?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2EasyChemistryWhich option gives the most correct statement for mole fraction?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2EasyChemistryWhich option has all relations correct?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2EasyChemistryWhich concentration term is considered least affected by temperature change, if no substance is lost or removed?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 3Easy