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

ChemistryWhat is the approximate mole fraction of acid in a 36.5% by mass hydrochloric acid solution?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 6MediumChemistryWhat is the approximate molality of a 36.5 percent by mass hydrochloric acid solution?Class 11Chapter 01: SolutionsLevel 6MediumChemistryWhich group contains only concentration units that are not directly affected by temperature change?Class 11Chapter 01: SolutionsLevel 4EasyChemistryThe mole fraction of solute in water is 0.1. What is the approximate molality of the solution?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 7HardChemistryWhat is the mole fraction of benzene in a mixture of 39 g benzene and 46 g toluene?Class 11Chapter 01: SolutionsLevel 5MediumChemistry25 mL ethanol is mixed and final volume is made 200 mL. What is the volume percent of ethanol?Class 11Chapter 01: SolutionsLevel 4EasyChemistry5 g solute is dissolved and the final volume of solution is made 250 mL. What is the mass by volume percent?Class 11Chapter 01: SolutionsLevel 4EasyChemistryWhat mass of sodium carbonate is present in 250 mL of 0.5 M sodium carbonate solution?Class 11Chapter 01: SolutionsLevel 5MediumChemistryIf the final volume is measured directly while preparing a solution, which volume should be used for calculating molarity?Class 11Chapter 01: SolutionsLevel 3EasyChemistryA solution has mole fraction of solute 0.2 and the solvent is water. What is the approximate molality of the solution?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 7HardChemistry12 mg impurity is present in 3 L water. Assuming a very dilute solution, what is the concentration in ppm?Class 11Chapter 01: SolutionsLevel 4EasyChemistryWhen is density required to convert between mass percent and molarity?Class 11Chapter 01: SolutionsLevel 3EasyChemistryA 200 g solution contains 25 percent solute by mass. What is the mass of solute?Class 11Chapter 01: SolutionsLevel 3EasyChemistryA 10% by mass urea solution is made in water. What is the approximate mole fraction of water?Class 11Chapter 01: SolutionsLevel 6MediumChemistry10 g sodium chloride is dissolved in 90 g water. What is the mass percent of sodium chloride?Class 11Chapter 01: SolutionsLevel 4EasyChemistry5 mg of fluoride ions are present in 2 kg of water. What is the concentration in parts per million?Class 11Chapter 01: SolutionsLevel 4EasyChemistry100 mL of 1 M hydrochloric acid is mixed with 200 mL of 0.5 M same acid. If final volume is 300 mL what is the molarity?Class 11Chapter 01: SolutionsLevel 6MediumChemistryWhich concentration unit generally does not change with temperature because volume is not involved?Class 11Chapter 01: SolutionsLevel 3EasyChemistryA 20% by mass glucose solution is prepared in water. What is its approximate molality?Class 11Chapter 01: SolutionsLevel 6MediumChemistry18 g of glucose is dissolved in 200 g of water. What will be the molality of the solution?Class 11Chapter 01: SolutionsLevel 5Medium