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

ScienceAn acid and a base are mixed in equal volumes, but the pH does not become 7. Which reason is most possible?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceIf turmeric turns reddish-brown and phenolphthalein turns pink in a solution, what is the nature of the solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceWhy does applying a mild basic substance give relief when an ant sting contains an acidic substance?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceIn electrolysis of brine, which product is formed at the anode and what is one use of it?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceA salt solution shows pH 7 and conducts electricity. It may be an example of which type of salt?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceIf a few drops of acid fall on the skin, what should be done first?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Easy ScienceA blue salt becomes white on heating and turns blue again when water is added. Which salt could it be?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceWhy are baking soda and an edible acid both kept in baking powder?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceThe aqueous solution of a non-metal oxide turns blue litmus red. What is the nature of the non-metal oxide?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceWhich statement best describes the general nature of metal oxides?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceIf a little base is added to an acidic solution and its pH changes from 3 to 4, what is the correct conclusion?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Hard ScienceRed litmus turns blue in a solution. Acid is added gradually, and finally both litmus papers show no change. What is the final state?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceWhy is it proper to protect bleaching powder from moisture and open air?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium SciencePlant roots are not growing well in highly acidic soil. Which substance will be useful in a suitable amount?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceWashing soda helps remove which ions from hard water?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceIf a solution of pH 2 is compared with a solution of pH 5, how much more acidic is the first solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Hard ScienceA sample is heated, gas is released, and the solution of the remaining solid is basic. If the sample was baking soda, what is the remaining solid?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceWhat is the main chemical reason for the effect of acid rain on marble?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceA student says sodium chloride is neutral, so its solution will not have ions. Why is this wrong?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium ScienceIf a solution can damage tooth enamel, in which pH range is it more likely to be?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 11Medium