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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।

ScienceThe gas formed on strong heating of baking soda turns lime water milky. Which gas is it?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Medium ScienceWhat is one important advantage of adding a mild acid in baking powder?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Medium 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 ScienceBlue crystals of copper sulphate become white on heating. What does this change prove?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Medium ScienceWhy is plaster of Paris formed when gypsum is heated in a controlled way?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Medium ScienceWhat is the amount of water per unit of calcium sulphate in plaster of Paris?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Medium ScienceHow many molecules of water of crystallisation are present in washing soda?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Easy ScienceWhy is sodium chloride solution considered neutral?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Medium ScienceWhich salt solution is more likely to show basic nature in water?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Hard ScienceWhich salt solution is more likely to show acidic nature in water?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Hard ScienceWhich experiment proves that hydrogen chloride shows acidic properties after dissolving in water?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Medium ScienceWhich statement shows that all bases are not soluble in water?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Medium ScienceWhy does effervescence occur when sodium hydrogen carbonate is mixed with an acid?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Easy ScienceA student passed the gas evolved from zinc and dilute acid into lime water. No milkiness appeared. What is the correct conclusion?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Medium ScienceAn acid reacts with a metal carbonate to give a gas. Why can the milkiness disappear when that gas is passed through lime water for a long time?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Hard ScienceWhy may an acid show little effect on an indicator if water is absent?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Medium ScienceWhich solution is most likely to have the highest concentration of hydrogen ions?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Medium ScienceWhy are acidic solutions able to conduct electric current?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Medium ScienceMethyl orange turns red in an acidic solution. If enough base is added to the same solution, in which direction will the color change?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Medium ScienceWhich observation gives the strongest evidence that ions are present in a solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium