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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।

ScienceWhat is the reason for keeping toothpaste mildly basic?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12MediumScienceWhat is the main role of bacteria in tooth decay?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12MediumScienceIf the pH of soil becomes very low, which substance can a farmer add to improve it?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12MediumScienceWhy is red cabbage juice useful as an indicator?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12EasyScienceWhy does a turmeric stain show a reddish-brown color when soap is applied?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12EasyScienceIn which condition will phenolphthalein change from colourless to pink?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12EasyScienceWhich is the correct description of a weak acid?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12EasyScienceWhat is the main difference between a concentrated acid and a strong acid?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12HardScienceWhy should acid always be added slowly to water while diluting?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12MediumScienceThe temperature rises during the reaction between an acid and a base. What does this indicate about the reaction?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12MediumScienceWhich pair will undergo a neutralisation reaction when mixed?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12EasyScienceWhen pH changes from three to six, which conclusion is most correct?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12MediumScienceWhat change in nature is shown when the pH of a solution changes from seven to eleven?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12EasyScienceIf soap does not lather in hard water but starts lathering after adding washing soda, what is the correct reason?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12MediumScienceWhich substance is used to soften hard water?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12MediumScienceBleaching powder is used for disinfecting water because of which property?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12EasyScienceIn making bleaching powder, slaked lime reacts with which gas?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12EasyScienceSodium hydroxide produced in the chlor-alkali process is useful in which industry?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12EasyScienceAt which electrode is chlorine gas formed in the chlor-alkali process?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12MediumScienceIn the chlor-alkali process, which product is formed at the cathode during electrolysis of brine?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 12Medium