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Class 10 Science

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

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 ScienceWhich metal is produced when silver chloride decomposes in sunlight?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 ScienceWhich is a correct example of a decomposition reaction caused by heating?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhen a single compound breaks down to form two or more simpler substances, what type of reaction is it called?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhat must not be changed while balancing a chemical equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhich product is formed when calcium oxide reacts with water?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhen magnesium oxide is added to water, what is the nature of the resulting aqueous mixture?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhy does a magnesium ribbon emit a dazzling white light when it burns?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceThe production of light during a change can indicate what?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhat does the arrow in a chemical equation show?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceOn which side of a chemical equation are the new substances formed in a reaction written?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhich is the most appropriate indication that a chemical reaction has occurred in the laboratory?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4Easy ScienceIf a colourless gas is evolved in a chemical reaction, is it correct to conclude that no reaction occurred solely because no colour change is seen?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4Easy ScienceWhat should be changed while balancing a chemical equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4Easy ScienceWhat is the first step in converting a word equation into a chemical equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4Easy