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RELATED QUESTIONS

Chemical Substances Nature And Behaviour

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

ScienceIf the hydrogen ion concentration in a solution increases ten times, what happens to the pH?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Hard ScienceSour food should not be stored in copper vessels. What is the scientific reason?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceWhy did the risk increase when a student added water to acid for dilution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Hard ScienceIn an experiment both hydrogen gas and carbon dioxide gas may form. What are the correct tests to identify them?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 9Medium ScienceConsidering carbon dioxide as a non-metal oxide, why does it react with lime water?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceA metal oxide is added to an acid and salt and water are formed. What type of reaction is this?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceAn unknown solid reacts with acid to give a gas that turns limewater milky. Which ion may be present in the solid?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Hard ScienceIf a solution has pH 3 and it is made one hundred times less acidic, what will be the approximate new pH?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Hard ScienceWhat is the basic reason for water formation in an acid-base reaction?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceWhich substance is useful in softening hard water?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceA solution turns blue litmus red but keeps phenolphthalein colourless. Which conclusion is correct?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceTurmeric turns reddish-brown in a solution. What property does this solution have?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Easy ScienceWhy does aqueous sodium chloride conduct electricity even though it is neutral?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceIf the pH of the mouth falls below 5, what situation develops for the teeth?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceWhat is the role of acid in damaging tooth enamel?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceWhy does food become spongy when baking soda and an acid are mixed?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceWhy is controlled heating necessary to make plaster of Paris from gypsum?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Hard ScienceA solution has pH 9. Acid is added and the pH becomes 7. What reaction has occurred?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Easy ScienceAcid rain lowers the pH of a lake. Why can this seriously affect aquatic organisms?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium ScienceWhich experiment gives the most direct evidence for the presence of ions in an acidic solution?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 9Medium