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Acid Base Indicators

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

ScienceBases turn red litmus paper into which colour?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 1Easy ScienceMethyl orange turns red in a colourless solution. On adding sodium hydroxide slowly, the colour changes to yellow. What process does this indicate?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 13Medium ScienceA student adds phenolphthalein to a colourless solution and observes a pink colour. Then dilute hydrochloric acid is added slowly and the pink colour disappears. Which conclusion is most correct?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 13Medium ScienceA solution turns blue litmus red but keeps phenolphthalein colourless. What is the nature of the solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Easy ScienceIf the pH value is greater than 7, how is the solution considered?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 15Easy ScienceIf the pH value is greater than 7, what is the nature of the solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 14Easy ScienceWhat colour is methyl orange in an acidic solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Easy ScienceWhat colour does phenolphthalein show in a basic solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Easy ScienceWhat type of solution will have pH 10?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 15Easy ScienceA solution has pH 3. What will be its nature?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Easy ScienceMethyl orange is red and phenolphthalein is colourless in a solution. Which substance is suitable to neutralise it?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 15Medium ScienceMethyl orange is red and phenolphthalein is colourless in a solution. What is the nature of the solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceA solution turns blue litmus red but keeps phenolphthalein colourless. Which conclusion is correct?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceIn a solution both red and blue litmus do not change colour. What is the most appropriate conclusion?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Medium ScienceWhat colour does methyl orange become in a basic solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Easy ScienceWhich of the following substances forms an aqueous solution that turns blue litmus paper red?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Easy ScienceWhich of the following substances acts as a natural indicator?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 1Easy