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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।

ScienceA student passes dry hydrogen chloride over dry blue litmus and observes no change. The same gas turns moist blue litmus red. What is the correct reason?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Hard ScienceA solution turns blue litmus red but keeps phenolphthalein colourless. Which conclusion is correct?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceA salt solution turns red litmus blue. It may be formed from which type of acid and base?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceOf two colourless solutions, the first gives a gas with magnesium and the second turns red litmus blue. What is the correct identification?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceIf a salt is formed from a strong base and a weak acid, what effect will its aqueous solution generally show on red litmus?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Hard ScienceA non-metal oxide dissolves in water and forms a solution that turns blue litmus red. What type of oxide is it?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Easy 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 ScienceIf a substance gives hydroxide ions in water, what effect will its solution show on an indicator?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Medium ScienceIf a salt solution turns red litmus blue, which could be a possible example?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Medium ScienceAn aqueous solution feels soapy and turns red litmus blue. In which range is its pH most likely to be?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Easy 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 ScienceIn an experiment with dry ammonia gas and moist red litmus paper, why can the litmus turn blue?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Medium ScienceA salt solution turns blue litmus red. From what type of acid and base could this salt be formed?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Hard ScienceA solution turns red litmus blue. On adding acid, heat is released and a salt is formed. What type of reaction is this?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Medium ScienceWhy does dry hydrogen chloride gas not affect dry litmus paper?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Medium ScienceIf a solution turns red litmus blue and shows pH 10, what is the most correct conclusion?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceIf a substance solution feels soapy and turns red litmus blue, what type is it?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceIf an aqueous solution of a substance tastes sour and turns blue litmus red, which category does it belong to?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceA sodium carbonate solution can turn red litmus blue. What type of salt is it?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceAn aqueous solution of ammonium chloride can turn blue litmus red. What is the reason?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium