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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।

ChemistryThe volume of a solution increases by 2 percent on heating while moles of solute remain same. What happens to molarity?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 3EasyChemistryIf molality is to be kept the same and mass of solvent is tripled, what change is needed in moles of solute?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2EasyChemistryIf molarity is to be kept the same and the volume of solution is doubled, what change is needed in moles of solute?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2EasyChemistryA solution contains 0.6 mole solute and has molarity 2 M. What is the volume in mL?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2EasyChemistryA solution contains 0.4 mole solute and has molarity 0.8 M. What is the volume of the solution?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2EasyChemistryA solution contains 50 mg solute and the mass of solution is 2 kg. What is the ppm?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 3EasyChemistryWhat is 0.075 percent expressed in ppm?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2EasyChemistryWhat is 500 ppm expressed as mass percent?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2EasyChemistryThe mole percent of solute in a solution is 35 percent. What is the mole fraction of solute?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2EasyChemistry46 g ethanol is mixed with 90 g water. Molar masses are 46 and 18 g mol−1, respectively. What is the mole fraction of ethanol?Class 11Chapter 01: SolutionsLevel 6MediumChemistry32 g methanol is mixed with 84 g water. Molar masses are 32 and 18 g mol−1, respectively. What is the approximate mole fraction of methanol?Class 11Chapter 01: SolutionsLevel 7MediumChemistryThe mass fraction of solute is 0.12. What is the mass percentage?Class 11Chapter 01: SolutionsLevel 4EasyChemistryA solution is made from 15 g solute and 85 g solvent. What is the mass fraction of solute?Class 11Chapter 01: SolutionsLevel 4EasyChemistry6 g solute is dissolved in 94 g solvent. What is the mass percentage?Class 11Chapter 01: SolutionsLevel 4EasyChemistryIf the mole ratio of solute to solvent is 3:2, what is the mole percent of solvent?Class 11Chapter 01: SolutionsLevel 5EasyChemistryIf the mole ratio of solute to solvent is 1:4, what is the mole fraction of solute?Class 11Some Basic Concepts of ChemistryPercentage composition and empirical/molecular formulasLevel 5EasyChemistryThe mole fraction of solute is 0.1. If total moles are 40, how many moles of solvent are present?Class 11Chapter 01: SolutionsLevel 5EasyChemistryIn a binary solution, the mole fraction of solvent is 0.75 and moles of solute are 3. How many moles of solvent are present?Class 11Some Basic Concepts of ChemistryMole concept and molar massLevel 2MediumChemistryIf the mole fraction of solute is 0.2 and the moles of solvent are 8, how many moles of solute are present?Class 11Chapter 01: SolutionsLevel 2MediumChemistryThe mole fraction of solute is 0.1. If moles of solvent are 9, how many moles of solute are present?Class 11Chapter 01: SolutionsLevel 2Medium