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Class10

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

ScienceWhat is the volume ratio of hydrogen to oxygen gases produced during the electrolysis of water?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 3MediumScienceWhich gas is produced at the anode during the electrolysis of acidified water?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 3MediumScienceWhat is the main reason that white silver chloride turns grey during its photolytic decomposition?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 3MediumScienceWhat is the identity of the brown gas formed on heating lead nitrate?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 3MediumScienceWhich energy change occurs when calcium oxide reacts with water to form calcium hydroxide?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 3MediumScienceIn an unknown reaction, the colour changes, heat is released, and a gas forms. What is the most suitable conclusion?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2MediumScienceIn which example are both gas evolution and a colour change observed as signs of a chemical reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2MediumScienceIf heat is written on the reactant side of a chemical equation, what type of reaction is it?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2MediumScienceIf heat is written on the product side of a chemical equation, what type of reaction is it?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2MediumScienceWhich statement about a displacement reaction is correct?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2MediumScienceWhile balancing a chemical equation, what must not be changed?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2MediumScienceHow does melting of ice differ from electrolysis of water?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2MediumScienceWhy is the breakdown of glucose during aerobic respiration a chemical reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2MediumScienceWhich statement correctly distinguishes exothermic and endothermic reactions?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2MediumScienceWhen hydrogen gas is passed over heated copper(II) oxide, the black copper(II) oxide changes into reddish-brown copper. Which statement correctly describes this reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2MediumScienceWhy does a reddish-brown layer form on an iron nail placed in copper sulphate solution?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2MediumScienceWhen a single compound breaks down into two or more simpler substances on heating, what is the reaction called?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2MediumScienceWhich statement is correct about the reaction between calcium oxide and water?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2MediumScienceWhen the reaction of magnesium burning in oxygen is balanced, what coefficient is placed before magnesium oxide?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 2MediumScienceIn the equation of which type of reaction is writing state symbols such as (aq) and (s) especially useful to show that a solid product has separated from a solution?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Medium

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