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Chemical Reactions

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

ScienceWhat substance is formed on iron during rusting?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhich two substances must be present for iron to rust?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhich black substance is formed when copper is heated in air?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhen copper oxide is heated with hydrogen what happens to copper oxide?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhat is a reaction called in which one substance is oxidised and another substance is reduced simultaneously?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhat generally happens during reduction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhat generally happens during oxidation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhat is a reaction called in which heat is absorbed?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhat is a chemical reaction called in which heat energy is released to the surroundings?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhat is released when glucose breaks down during respiration?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceA combustion reaction is generally what type of reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceIn a combustion reaction, fuel reacts with which gas?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhat mainly happens in a double displacement reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhich insoluble product forms as a white precipitate when aqueous sodium sulphate reacts with aqueous barium chloride?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhen two aqueous solutions are mixed and an insoluble white solid forms and separates out, what is the solid called?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhen an iron nail is placed in copper sulphate solution, the pale green solution formed mainly contains which substance?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhen an iron nail is placed in copper sulphate solution, what is the reddish-brown coating formed on the nail?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceIn a metal displacement reaction, which metal displaces another metal from its compound or salt solution?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceIn a photolytic decomposition reaction, what supplies the energy needed to decompose a compound?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceIn an electrolytic decomposition reaction, in which form is energy supplied to decompose a compound?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy