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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।

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 ScienceEqual volumes of acid and base are mixed, yet the solution remains basic. What is the most suitable reason?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceWhy does an acidic solution not immediately become basic even after strong dilution with water?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceAn acidic solution changes from pH 3 to pH 6. Approximately how much did the acidity decrease?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Hard ScienceA solution changes from pH 12 to pH 10. What is the correct conclusion?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceWhy can adding organic matter improve highly basic soil?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceWhy does enamel risk increase when tooth pH goes below 5.5?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceA solution gives orange colour with universal indicator and becomes yellow after adding more water. What is the correct conclusion?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceA solution has pH 2 and is diluted to become one hundred times less acidic. What will be the approximate new pH?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 10Medium ScienceIf the pH value of an acidic solution increases but remains below seven, what does it mean?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceWhy is ammonium chloride solution acidic?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceWhy does a farmer add slaked lime to highly acidic soil?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceHow does basic toothpaste help prevent tooth decay?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Easy ScienceTooth decay increases when the acidity value in the mouth becomes too low. What is the main reason?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceViolet colour in universal indicator shows which type of solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 15Easy ScienceRed colour in universal indicator shows which type of solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 15Easy ScienceWhich colour does universal indicator show in a neutral solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 15Easy ScienceWhat is the usual pH value of a neutral solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 15Easy ScienceIf the pH value is greater than 7, how is the solution considered?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 15Easy