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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।

ScienceWater is added to an acidic solution but it remains acidic. What is the correct reason?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceA soil has pH 5 and crops are not growing well. Which method is scientifically more suitable?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceA sodium chloride solution has pH about 7 but conducts electricity. What idea does this clarify?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceIf blue litmus turns red in a solution and electric current also passes through it, which conclusion is strongest?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceA student suggests identifying an acidic solution by taste. Why is this suggestion unacceptable in the laboratory?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Easy ScienceAdding sodium carbonate to a solution gives no gas, but adding acid to sodium carbonate gives gas. What does this indicate?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceWhy is bleaching powder used for disinfecting drinking water?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceIf a solution has pH close to 14 and feels slippery on skin, what is the safest conclusion?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceA solution is acidic but very dilute. Around what pH can it be?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceWhich option correctly shows the relationship among gypsum, plaster of Paris, and water?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Hard ScienceWhy is the pH of acid rain lower than that of normal rain?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceRed litmus turns blue in a solution, and after adding acid both red and blue litmus show no change. What is the nature of the final solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceIf a substance forms salt and water with an acid but is insoluble in water, how should it be classified?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceThe gas released on heating baking soda turns lime water milky. What is the identity of the gas?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceIn an industrial process, three products are obtained from brine. One of them is a base useful in paper and soap industries. Which base is it?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceIf equal volumes of an acid and a base are mixed but the pH does not become 7, what could be a possible reason?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium SciencePhenolphthalein becomes pink and turmeric becomes reddish-brown in a solution. Which ion is likely to be in excess?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceSodium hydroxide kept in open air can be affected not only by moisture but also by carbon dioxide. Which substance can form?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceIf copper oxide is added to dilute hydrochloric acid, a blue-green solution may form. What nature does this prove?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceA solution had pH 3 and after dilution it became pH 5. By how much did the hydrogen ion concentration decrease?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Hard