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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।

ScienceA non-metal oxide dissolves in water and forms a solution that turns blue litmus red. What type of oxide is it?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Easy ScienceIf a metal oxide reacts with an acid to form salt and water, what general nature of the metal oxide is proved?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Easy ScienceIn the chlor-alkali process, where is the sodium hydroxide mainly obtained?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceAcid is slowly added to a basic solution. The pink colour of phenolphthalein finally disappears. What point can this indicate?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceAn aqueous salt solution shows pH 5. What is the most probable formation condition of this salt?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceA white powder reacts with dilute acid to release a gas. The gas turns lime water milky, and excess gas reduces the milkiness. Which group can the white powder belong to?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceIf the pH of a solution changes from 2 to 5, what happens to the hydrogen ion concentration?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Hard ScienceTwo acids have the same concentration. The first acid is a good conductor of electricity and the second is a weak conductor. What is the best reason?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Hard ScienceA universal indicator gives deep red colour in one solution and violet colour in another solution. Which comparison is correct?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8Medium ScienceIf a student says acids should be identified only by taste, why is this method wrong?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Easy ScienceA substance does not dissolve in water but reacts with acid to form salt and water. What can it be called?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Medium ScienceA gas turns moist blue litmus red. What does this indicate about the gas?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Medium ScienceIn a solution both red and blue litmus do not change colour. What is the most appropriate conclusion?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Medium ScienceWhich substance is considered useful for reducing permanent hardness of water?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Medium ScienceWhich is the most suitable sequence to confirm the presence of carbonate ions in a sample?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Medium ScienceIf baking soda is heated, what will be the main substance in the solid residue?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Medium ScienceWhich statement about the nature of salts is incorrect?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Medium ScienceWhen acid is added to a solution, its pH goes below 7. Which ion has become relatively more abundant?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Medium ScienceIf a small amount of acid falls on the skin, what should be the first safe step in the laboratory?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Medium ScienceWhich pair is a correct daily-life example of neutralisation?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 7Easy