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Class 10 Mcq

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

ScienceOn what basis is the difference between thermal decomposition and electrolytic decomposition most clearly identified?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Medium ScienceWhat is the main purpose of adding a little acid during electrolysis of water?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Medium ScienceWhat is the identity of the gas formed at the anode during electrolysis of water?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Medium ScienceIn electrolysis of water, if hydrogen is thirty-six millilitres, what will be the expected volume of oxygen?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Medium ScienceWhat is the most suitable reason for storing silver salts in dark coloured bottles?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Medium ScienceSensitivity of silver bromide to light is related to which use?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Medium ScienceMetal A displaces metal B, and metal B displaces metal C. Which metal is the least reactive?Class 10Metals and Non-metalsReactivity seriesLevel 4Medium ScienceMetal A is less reactive than metal B. What will happen if metal A is placed in an aqueous solution of a salt of metal B?Class 10Metals and Non-metalsReactivity seriesLevel 3Medium ScienceWhich condition will be most helpful for rusting of iron?Class 10Chemical Substances – Nature and BehaviourLevel 2Easy ScienceIn which of the following reactions does a more reactive metal displace a less reactive metal from its salt solution?Class 10Metals and Non-metalsReactivity seriesLevel 5Medium ScienceMetal A displaces metal B and metal B displaces metal C from their salt solutions. Which is least reactive?Class 10Metals and Non-metalsReactivity seriesLevel 5Medium ScienceWhen a single compound breaks down into two or more simpler products on heating, what type of reaction is it?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 3Medium ScienceA student placed an iron nail in blue copper sulphate solution and said, “Copper is more reactive than iron, so copper gets deposited on the nail.” Which is the correct correction to this statement?Class 10Metals and Non-metalsReactivity seriesLevel 1Hard ScienceIf metal A displaces metal B from an aqueous solution of its salt, which conclusion is correct?Class 10Metals and Non-metalsReactivity seriesLevel 5Medium ScienceIf bubbles form in an experiment, which conclusion is most careful?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4Medium ScienceWhich statement correctly explains the relation between oxidation and reduction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Medium ScienceWhat is the main difference between displacement and double displacement reactions?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Medium ScienceIf gas evolves in a reaction but the colour does not change, what is the correct conclusion?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Medium ScienceIf the temperature of a reaction mixture decreases during a reaction, it generally indicates which type of reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Medium ScienceWhich of the following observations is not evidence that a chemical reaction has occurred?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Easy