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Litmus

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

ScienceWhat is the nature of a solution that turns blue litmus paper red?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Easy ScienceWhy can aqueous solutions of non-metal oxides often turn blue litmus red?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 15Medium ScienceA solution turns blue litmus red but the same substance in dry form has no effect on litmus. What is the most appropriate reason?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 15Medium ScienceWhy is the aqueous solution of non-metal oxides often acidic?Class 10Chemical Substances – Nature and BehaviourMetals and Non-metalsLevel 14Medium ScienceAn acidic gas does not turn dry blue litmus red but turns moist blue litmus red. What does this prove?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 14Medium ScienceA salt solution shows pH 9 and turns red litmus blue. From which type of acid and base could it be formed?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 14Hard ScienceA substance's aqueous solution has excess hydrogen ions. What will happen to blue litmus?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 13Easy ScienceTurmeric turns reddish-brown and red litmus turns blue in a solution. Which ion is likely to be in excess?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 13Easy ScienceA salt solution shows pH 6 and turns blue litmus slightly red. From what may this salt be formed?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 13Hard ScienceA salt solution turns blue litmus red. From which type of acid and base is it most likely formed?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Medium ScienceIf blue litmus turns red in a solution and bubbles form when carbonate is added, which conclusion is correct?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceThe aqueous solution of a non-metal oxide turns blue litmus red. What is the nature of the non-metal oxide?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceRed litmus turns blue in a solution. Acid is added gradually, and finally both litmus papers show no change. What is the final state?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceAn unknown salt solution shows pH 8.5 and turns red litmus blue. What type of salt is it most likely to be?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium 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 ScienceA student says acids only turn blue litmus red and show no other chemical property. Which response is correct?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 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 ScienceAmmonium chloride solution can turn blue litmus red. What is the most appropriate reason?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceAn aqueous solution of a salt turns red litmus blue. From which pair is this salt more likely to be formed?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium