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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।

ChemistryA student ignored temperature and pressure in Gay-Lussac's law. What is the mistake?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationLevel 21EasyChemistryA student says CO and CO₂ are only an example of definite proportions. What is a better answer?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationLevel 21EasyChemistryA student assumes mass of each product equals mass of each reactant. What is the mistake?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationLevel 21EasyChemistryIf gas escapes from an open bottle during reaction what is the correct comment on conservation of mass?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationLevel 21EasyChemistryIf 4 grams A and 12 grams B form a compound what is the total compound mass?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationLevel 20EasyChemistryA compound contains 80 percent A. What will be percent of B?Class 11Some Basic Concepts of ChemistryPercentage composition and empirical/molecular formulasLevel 20EasyChemistryWhen H₂O and H₂O₂ are compared, which law is most suitable?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationLevel 20MediumChemistryIf the mass ratio of hydrogen to oxygen in water is 1:8, how much oxygen is needed for 3 grams of hydrogen?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationLevel 20EasyChemistryIn a pure compound, the mass ratio A:B is 3:4 and the total mass is 28 grams. What is the mass of A?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationLevel 20EasyChemistryIn a reaction, the total mass of the reactants is 36 grams. If product A has a mass of 13 grams and product B has a mass of 17 grams, what is the mass of the third product?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationLevel 20EasyChemistryIf 28 grams of product are formed and one reactant has a mass of 12 grams, what is the mass of the other reactant?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationLevel 20EasyChemistryWhich statement is correct about definite proportions?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationLevel 19EasyChemistryWhich option represents a pure compound?Class 11Some Basic Concepts of ChemistryStoichiometry and calculationsLevel 19EasyChemistryIn which law is the total mass on the reactant side equal to the total mass on the product side?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationLevel 19EasyChemistryWhich scientist is associated with the law of gaseous volumes?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationLevel 19EasyChemistryIn different samples of pure Na₂O, the percentage of elements remains the same. Which law is this?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationLevel 18EasyChemistryIn different samples of pure CH₄, the percentage of elements remains the same. Which law is this?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationLevel 18EasyChemistryIn different samples of pure AlCl₃, the percentage of elements remains the same. Which law is this?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationLevel 18EasyChemistryIn different samples of pure K₂O, the percentage of elements remains the same. Which law is this?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationLevel 18EasyChemistryIn different samples of pure CaCl₂, the percentage of elements remains the same. Which law is this?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationLevel 18Easy