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Class 11 Chemistry

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

ChemistryWhich of the following statements correctly expresses the law of definite proportions?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationEasyChemistryUnder same conditions 5 litres gas A and 15 litres gas B react. What is the ratio?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationEasyChemistryA student says that the mass ratio of hydrogen and oxygen in pure water samples obtained from river water and rainwater will be different. Which law shows that this statement is incorrect?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationEasyChemistryIn a closed vessel, heating 10.0 g of calcium carbonate produces 5.6 g of calcium oxide and 4.4 g of carbon dioxide. Which law is demonstrated by this observation?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationEasyChemistryWhen two elements form more than one compound, the masses of one element that combine with a fixed mass of the other are in simple whole-number ratios. Which law states this?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationEasyChemistryPure water obtained from different sources always contains hydrogen and oxygen in the same mass ratio. Which law does this illustrate?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationEasyChemistryTo what does the law of definite proportions apply?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationEasyChemistryWhich statement about a chemical reaction in a closed vessel represents the law of conservation of mass?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationEasyChemistryIn two compounds, a fixed mass of 16 g of A combines with 27 g and 81 g of B, respectively. What is the simplest ratio of the masses of B?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationEasyChemistryIn two compounds, a fixed mass of 14 g of A combines with 22 g and 44 g of B, respectively. What is the simplest ratio of the masses of B?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationEasyChemistryIn two compounds, a fixed mass of 25 g of A combines with 30 g and 45 g of B, respectively. What is the simplest ratio of the masses of B?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationEasyChemistryIn two compounds, a fixed mass of 18 g of A combines with 21 g and 63 g of B, respectively. What is the simplest ratio of the masses of B?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationEasyChemistryIn two compounds, a fixed mass of 20 g of A combines with 16 g and 40 g of B, respectively. What is the simplest ratio of the masses of B?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationEasyChemistryIn two compounds, a fixed mass of 15 g of A combines with 12 g and 48 g of B, respectively. What is the simplest ratio of the masses of B?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationEasyChemistryAt the same temperature and pressure, gas volumes are 7 litres, 14 litres, and 7 litres. What is their simplest volume ratio?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationEasyChemistryIf 2 volumes gas A and 5 volumes gas B form 2 volumes gas C what is the correct ratio?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationEasyChemistryWhich statement uses conservation of mass correctly?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationEasyChemistryWhich statement uses definite proportions correctly?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationEasyChemistryTwo samples of a pure compound have A:B as 3:5 and 6:10. What is the correct conclusion?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationEasyChemistryIf 3 grams A and 7 grams B form 9 grams product and 1 gram gas is mass conserved?Class 11Some Basic Concepts of ChemistryLaws of chemical combinationEasy

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