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Acid Base

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

ScienceIn an experiment, solution A turns blue litmus red and solution B turns red litmus blue. When mixed in suitable amounts, the temperature rises slightly. This proves which reaction?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceThe temperature rises slightly when sodium hydroxide is added to an acidic solution. What is the reason?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceA solution has pH 9. Acid is added and the pH becomes 7. What reaction has occurred?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Easy ScienceA universal indicator gives deep red colour in one solution and violet colour in another solution. Which comparison is correct?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceIf a substance turns blue litmus red and forms salt and water with another substance, what is the nature of the second substance?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Easy ScienceOlfactory indicators give signals in acids and bases based on what change?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceWhy is zinc oxide called amphoteric?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceA student tried to identify an unknown solution by touching it in the laboratory. Why is this method wrong?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Easy ScienceWhich substance can identify a basic solution as a natural indicator?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceIf a base is slowly added to an acidic solution, in which direction can the colour of universal indicator change?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceWhen universal indicator is added to a solution, the colour appears green. What is the nature of the solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Easy ScienceA solution turns red litmus blue and gives pink colour with phenolphthalein. What is the nature of the solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Easy ScienceIf a small amount of base is dissolved in water, in which direction will the pH of the solution move?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceA solution turns blue litmus red and releases gas with a metal carbonate. What type of solution is it?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Easy 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 ScienceIf acid is added to a basic solution, in which direction will its pH generally move?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Medium ScienceWhich of the following salts is an example of a neutral salt?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Easy