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Water Of Crystallisation

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

ScienceWhich option correctly shows the relationship among gypsum, plaster of Paris, and water?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10HardScienceWhen gypsum is heated at a controlled temperature, how much water remains in the product formed?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10MediumScienceAn unknown solid gives water droplets and changes colour on heating. Its colour returns after adding water. This indicates the presence of what?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10MediumScienceWhy is controlled heating necessary to make plaster of Paris from gypsum?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9HardScienceBlue copper sulphate gives a white substance on heating. Its colour returns when water is added. What does this prove?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9MediumScienceOn heating a sample, water droplets appear and its colour changes. This may identify what kind of salt?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8MediumScienceWhy may washing soda crystals gradually appear like a white powder when left exposed to air?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8MediumScienceWhy can prolonged strong heating of gypsum form more anhydrous calcium sulphate instead of plaster of Paris?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8MediumScienceWhen sodium carbonate crystals are heated, their hydrated nature decreases. This is related to which idea?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7MediumScienceWhy does the blue colour return when water is added after heating blue copper sulphate crystals?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7MediumScienceWhy does heating gypsum at about 373 K produce plaster of Paris?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6MediumScienceHow many molecules of water of crystallisation are present in one molecule of washing soda?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6HardScienceBlue copper sulphate crystals turn white on heating. This change occurs due to removal of what?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6MediumSciencePlaster of Paris is formed by controlled heating of gypsum. The main change is related to what?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11MediumScienceWhen blue copper sulphate is heated, a white solid is formed. This change occurs due to the loss of what?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11MediumScienceWhy can overheating gypsum reduce its usefulness for preparing plaster of Paris?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10MediumScienceWhy can washing soda be called a hydrated salt?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10MediumScienceIn which substance is the presence of water of crystallisation easily shown by colour change?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10MediumScienceThe main difference between gypsum and plaster of Paris is related to what?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9MediumScienceWhite anhydrous copper sulphate turns blue when water is added. What does this show?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Easy