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RELATED QUESTIONS

Chemical Substances Nature And Behaviour

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

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 ScienceIf a base solution turns phenolphthalein pink, when will the pink colour disappear on adding acid?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceWhich substance is most suitable to reduce the acid present in an ant sting?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Easy ScienceWhich solid substance is formed when sodium hydrogen carbonate is heated?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Easy ScienceBlue copper sulphate gives a white substance on heating. Its colour returns when water is added. What does this prove?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceA student says a concentrated acid and a strong acid are the same. What is the correct evaluation?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceWhich statement about bleaching powder is most correct?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Hard ScienceIf equal amounts of water are repeatedly added to an acidic solution, what change is expected?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Hard ScienceWhich option correctly gives an example of a strong acid and a weak acid?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Hard ScienceWhich is the correct group of three main products formed in the chlor-alkali process?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Hard SciencePlaster of Paris loses its usefulness when kept open for a long time. What is the best reason?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Hard ScienceWashing soda crystals become powdery when kept in open air. Which phenomenon does this illustrate?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Hard ScienceA metal does not give hydrogen gas with an acid, but zinc gives gas in the same acid. Which conclusion is correct?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Hard ScienceWhich salt is most likely to give an acidic solution when dissolved in water?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Hard ScienceA gas released from a carbonate sample with acid is passed into lime water for a long time. Why can the final solution become clear again?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Hard ScienceWhat is the main reason for the different effect of dry hydrogen chloride and moist hydrogen chloride on litmus?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Hard ScienceIf the pH of a solution is brought from 11 close to 7, which ion is being effectively reduced?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceA solution gives green colour with universal indicator. When a small amount of acid is added, the colour becomes yellow. What does this show?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 student says acids are always dangerous and bases are always safe, what is the correct response?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium