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Chemical Reactions And Equations

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

ScienceWhat happens in a displacement reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Easy ScienceWhy is a chemical equation balanced?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Easy ScienceWhat happens in a double displacement reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Easy ScienceWhat is the general meaning of reduction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Easy ScienceWhat is the general meaning of oxidation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Easy ScienceWhat is formed in a precipitation reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Easy ScienceWhat is generally required in combustion reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Easy ScienceWhich gas is produced at the cathode in the chlor-alkali process?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 6Medium ScienceWhich gases are also formed when sodium hydroxide is prepared from sodium chloride solution by electrolysis?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 6Medium ScienceWhy are metal oxides generally considered basic?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 14Medium 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 ScienceWhich gas is released on heating sodium hydrogen carbonate and helps cakes rise?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 6Medium ScienceA clean iron nail is placed in blue copper sulphate solution. A reddish-brown coating forms and the solution turns light green. Which conclusion is correct?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Medium ScienceA student placed an iron nail in blue copper sulphate solution. The solution gradually turned green and a reddish-brown coating appeared on the nail. Which statement is correct?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Medium ScienceIf heat is written on the product side and the container is hot, what is the nature of the reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceIf a container becomes cold and gas evolves in a reaction, what is the most careful conclusion?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Medium ScienceWhy is rancidity slower in nitrogen-filled food packets?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhich of the following reactions is both a displacement reaction and an oxidation-reduction reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Medium ScienceRancidity of oils and fats is the result of which chemical process?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Medium ScienceWhat is the chemical reason why an oiled iron object rusts less?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Medium