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Class 12 Mcq

Class 12 Chemistry के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

ChemistryIf the mass percentage of solute is 12%, what is the mass ratio of solute to solvent?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 5EasyChemistry27 g aluminium chloride is dissolved in 2 L solution. If its molar mass is 133.5 g mol−1, what is the approximate molarity?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 6MediumChemistryA student uses mass of solution instead of mass of solvent in the denominator while calculating molality. What will generally happen?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 6MediumChemistryA dilute aqueous solution contains calcium ions at 40 mg L−1. Approximately how many ppm is this?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 5EasyChemistry200 mL of 0.5 M solution and 300 mL of 1.5 M solution are mixed. Total volume is additive. What is the final molarity?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 8HardChemistry100 mL of 1 M solution and 200 mL of 3 M solution are mixed. Assume volumes are additive. What is the molarity of the mixture?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 8HardChemistry150 mL of a 0.4 M solution is diluted with water to 600 mL. What is the new molarity?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 6MediumChemistryA solution has 20 mass percent solute. If total solution mass is 150 g, what is the mass of solvent?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 5EasyChemistryIf 1 L solution has mass 1200 g and contains 120 g solute, what is the mass percentage?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 4EasyChemistryWhat mass of glucose is required for 1 kg water in a 0.5 molal solution?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 6MediumChemistryIn a 2 molal solution, the mass of solvent is 250 g. How many moles of solute are present?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 5EasyChemistry100 mL of a 1.2 mol L−1 solution is diluted to 300 mL. What is the final molarity?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 6MediumChemistry0.30 mol solute is dissolved to make 600 mL solution. What is the molarity?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 5EasyChemistryHow many moles of solute are present in 750 mL of a 0.4 mol L−1 solution?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 5EasyChemistryIn a solution, the mole ratio of solute to solvent is 1:4. What is the mole fraction of solute?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 5EasyChemistryWhich quantity appears in the denominator in both molarity and mass-volume percentage?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 4EasyChemistryWhat is commonly important in both mass percentage and molality?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 3EasyChemistryWhich option correctly gives the main difference between molarity and molality?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 3EasyChemistryIf both moles of solute and mass of solvent are doubled in molality, what happens to molality?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 4EasyChemistryWhy is molality considered more reliable than molarity when temperature changes?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 4Easy

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