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Litmus Test

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

ScienceA substance turns red litmus blue but is only slightly soluble in water. What is the more correct term for it?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 13Medium ScienceWhich substance is a common example of a basic substance?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Easy ScienceA substance dissolves in water, turns red litmus blue, and feels soapy. Which ion will mainly be present?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceAn unknown solution turns red litmus blue and forms a white precipitate when carbon dioxide is passed through it. Which substance is most likely present in the solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Hard ScienceA solution turns blue litmus red and gives a colourless gas with zinc metal. Which ion will mainly be present in this solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 6Hard ScienceWhich of the following statements is correct for a base?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Easy ScienceWhich of the following salts can turn blue litmus red in its aqueous solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceWhich of the following substances does not change the colour of either red or blue litmus paper in an aqueous solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceA student says that dry hydrogen chloride gas will turn blue litmus paper red. What is the error in this statement?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceA student places red litmus paper in a solution, and it turns blue. What type of solution is it?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Easy ScienceA student dips blue litmus paper into a solution, and it turns red. Which conclusion about the solution is correct?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Easy ScienceA student dissolved a white powder in water and added blue litmus to it. The litmus turned red. What type of substance is the powder most likely to be?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Easy ScienceA student dipped blue litmus paper in vinegar, and it turned red. What is the correct reason for this change?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 2Easy