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And Salts

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 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 ScienceA solution has pH 3. If the hydrogen-ion concentration becomes one hundred times lower, what will be the approximate new pH?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Hard ScienceAn unknown solution turns blue litmus red and gives a gas with zinc. When sodium carbonate is added to the same solution, another gas is released. What is the correct identification of both gases?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Hard ScienceA question suggests using only taste to identify acids, bases, and salts. What is the most correct response from an exam point of view?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceAn indicator shows red in acidic solution and yellow in basic solution. Which indicator could it be?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceA student says carbon dioxide is only a gas, so it has no relation with acids and bases. What is the correct correction?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceUniversal indicator gives blue colour in a solution. After adding acid, the colour becomes green. What does this mean?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceA salt formed by an acid-base reaction gives an acidic solution. What does this indicate about the parent substances?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Hard ScienceAn aqueous solution of a substance shows pH 13. Why is it unsafe to touch it directly?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium 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 ScienceWhich pair is not correct?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceIf adding water to an acidic solution changes its pH from 2 to 3, what happens to acidity?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Hard ScienceWhat risk may occur when curd is stored in a copper vessel?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceWhy does pH increase when hydroxide ions are added to an acidic solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceA student says every salt solution is neutral. Which example will disprove this statement?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceCarbon dioxide is passed into a solution. Milkiness appears first and then disappears. Which substance causes the initial milkiness?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceWhich product obtained from common salt is useful in soap and paper industries?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceIf a basic solution is diluted with water, in which direction will its pH move?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceWhich substance can be used both for removing colour in the textile industry and for disinfecting water?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceMagnesium gives brisk bubbles with an acid, but copper does not. What is the reason?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium