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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।

ChemistryWhich option correctly gives the main difference between saturated and supersaturated solutions?Class 12Chapter 01: Solutions3: SolubilityLevel 12EasyChemistryIf an impure solid dissolves in hot solvent and gives crystals on cooling, when should insoluble impurities be removed?Class 12Chapter 01: Solutions3: SolubilityLevel 12EasyChemistryWhich option gives the correct basis for choosing a solvent for recrystallization?Class 12Chapter 01: Solutions3: SolubilityLevel 12EasyChemistryIf gas pressure is increased but the liquid is also heated considerably, what must be checked before drawing a definite conclusion?Class 12Chapter 01: Solutions3: SolubilityLevel 13MediumChemistryIn which case is pressure considered to have the least effect on the solubility of a solid solute?Class 12Chapter 01: Solutions3: SolubilityLevel 11EasyChemistryIf a solubility curve rises steeply, why can it be useful for recrystallization?Class 12Chapter 01: Solutions3: SolubilityLevel 13MediumChemistryIf the solubility curve of a solid is almost horizontal, what can be said about its solubility when temperature changes?Class 12Chapter 01: Solutions3: SolubilityLevel 11EasyChemistryIn which case is the solubility of an ionic solid in water more likely to increase?Class 12Chapter 01: Solutions3: SolubilityLevel 15MediumChemistryOil dissolves poorly in water but better in an organic solvent. Which principle explains this?Class 12Chapter 01: Solutions3: SolubilityLevel 11EasyChemistryWhat is the deeper reason for the good solubility of salt in water?Class 12Chapter 01: Solutions3: SolubilityLevel 14MediumChemistryIf two solids have the same solubility but one is powdered, in what way will the powdered solid be ahead?Class 12Chapter 01: Solutions3: SolubilityLevel 11EasyChemistryWhat is the main effect of grinding sugar into fine powder on its dissolving in water?Class 12Chapter 01: Solutions3: SolubilityLevel 10EasyChemistryWhich option gives the most accurate difference between solubility and rate of dissolving?Class 12Chapter 01: Solutions3: SolubilityLevel 11EasyChemistryIf both pressure and temperature change for gas solubility, what is the correct exam strategy?Class 12Chapter 01: Solutions3: SolubilityLevel 13MediumChemistryUnder which condition is the solubility of a gas in a liquid most likely to be highest?Class 12Chapter 01: Solutions3: SolubilityLevel 11EasyChemistryWhy can the amount of dissolved oxygen be lower in warm water?Class 12Chapter 01: Solutions3: SolubilityLevel 11EasyChemistryIn recrystallization, if an impurity is highly soluble even in the cold solvent, where will it mostly remain?Class 12Chapter 01: Solutions3: SolubilityLevel 12EasyChemistry45 g solute forms a saturated solution in 150 g water. How much solute is required for saturation in 75 g water at the same temperature?Class 12Chapter 01: Solutions3: SolubilityLevel 10EasyChemistryA solution contains 80 g water and 28 g solute. If the solubility is 40 g per 100 g water at the same temperature, what type of solution is it?Class 12Chapter 01: Solutions3: SolubilityLevel 10EasyChemistryIf 36 g solute dissolves up to saturation in 120 g water, what is the solubility per 100 g water?Class 12Chapter 01: Solutions3: SolubilityLevel 13Medium

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