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Class 10 Science के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

ScienceWhen a drop of water is added to white anhydrous copper sulphate, the blue colour returns. What is the main reason?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Medium ScienceWhy does white anhydrous copper sulphate turn blue again when water is added?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceWhy is plaster of Paris kept away from moisture?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceWhite anhydrous copper sulphate turns blue when water drops are added. What does this prove?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Easy ScienceWhy does plaster of Paris become hard when mixed with water?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Medium ScienceWhy does white anhydrous copper sulphate turn blue again when water is added?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Medium ScienceWhat colour does white copper sulphate become when water is added?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Easy ScienceWhy does plaster of Paris become hard when water is added?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 14Medium ScienceWhich option correctly shows the relationship among gypsum, plaster of Paris, and water?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Hard ScienceWhen water is added to plaster of Paris, into which substance does it harden?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Easy ScienceWhy does the blue colour return when water is added after heating blue copper sulphate crystals?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Medium ScienceWhy is plaster of Paris kept away from moisture in a closed container?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Medium ScienceWhy do blue copper sulphate crystals turn white on heating?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Medium ScienceWhy does white anhydrous copper sulphate become blue again when water is added?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Medium ScienceWhat colour appears when water is added to white anhydrous copper sulphate?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceWhat happens when water is added to white anhydrous copper sulphate?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Easy SciencePlaster of Paris is made from what?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Easy