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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।

ScienceWhat colour does methyl orange generally show in a basic solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Easy ScienceIf phenolphthalein remains colourless in a solution, which conclusion is the most careful one?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceOnion juice is an example of which type of indicator?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceOn what basis do olfactory indicators help identify acids and bases?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceIn an acid-base reaction, if an indicator stops changing colour, what condition may it indicate?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceMetal oxides react with acids to form salt and water. What nature does this prove?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceWhy are non-metal oxides called acidic oxides?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceWhat is the usual nature of an aqueous solution of sodium carbonate?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceWhat is the usual nature of an aqueous solution of ammonium chloride?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceWhy is an aqueous solution of sodium chloride nearly neutral?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceOn what can the pH of a salt depend?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceWhy is plaster of Paris stored away from moisture?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceWhich substance is formed when gypsum is heated at about 373 K?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceWhich statement about water of crystallisation is correct?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Easy ScienceWhy does the blue colour return when water is added to white copper sulphate?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceWhy does adding washing soda to hard water help in washing?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceThe formula of washing soda shows sodium carbonate decahydrate. What does the word decahydrate indicate?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Easy ScienceWhy can excess use of only baking soda give a bitter taste to cake?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceWhat is the main difference between baking soda and baking powder?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceWhich main gaseous product is formed when baking soda is heated?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium