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Acids Bases And Salts

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

ScienceThe reaction between calcium oxide and carbon dioxide forms a compound. What nature does this illustrate?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceWhy would it be wrong to call aluminium oxide only a basic oxide?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceZinc can give hydrogen gas with both acid and sodium hydroxide. What kind of behaviour does this indicate?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Hard ScienceIn which case is an acidic solution most likely to have the highest electrical conductivity?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceTwo acids have the same concentration. The first has pH 2 and the second has pH 5. Which statement is correct?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Hard ScienceA student passes dry hydrogen chloride gas separately over dry and moist blue indicator papers. Only the moist paper turns red. Which principle is proved?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Hard ScienceA colourless solution turns blue indicator paper red but produces no bubbles with carbonate. Which conclusion is most correct?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Hard ScienceWhy is it wrong to identify an acid or base by taste in the laboratory?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Easy ScienceWhy should an unknown colourless solution not be identified only by looking at it?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Easy ScienceA metal gives gas with an acid but copper does not. What conclusion follows?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Hard ScienceWhy does pH increase when hydroxide ions are added to an acidic solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceIf a solution showing red colour with universal indicator turns green after adding base, what is the conclusion?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceIf a solution showing blue colour with universal indicator turns green after adding acid, what happened?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceThe pH of a lake becomes very low due to acid rain. Why does risk to aquatic organisms increase?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceA farmer's soil has pH 4.5. Which treatment is suitable?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Easy ScienceHow does washing soda help soften hard water?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceSodium carbonate solution is basic and gives a gas with acid. How will this gas be identified?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceWhen copper oxide is added to dilute hydrochloric acid, a blue-green solution forms. What does this prove?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceWhy are non-metal oxides generally considered acidic?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceWhy are metal oxides generally considered basic?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium