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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।

ScienceWhen oxygen is removed from one substance and, in the same reaction, added to another substance, what is the reaction called?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Hard ScienceWhich substance is oxidised in the reaction between copper(II) oxide and hydrogen?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Hard ScienceWhy does a precipitate form when aqueous solutions of barium chloride and sodium sulphate are mixed?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Hard ScienceMetal A displaces metal B from a solution of B's salt, but metal B does not displace metal A from a solution of A's salt. What is the correct conclusion?Class 10Metals and Non-metalsReactivity seriesLevel 1Hard ScienceWhich new salt is formed when an iron nail is placed in copper sulphate solution?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Hard ScienceWhat is the main reason for storing silver chloride in a dark-coloured bottle?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Hard ScienceSilver chloride turns grey in sunlight. Which substance is mainly responsible for this colour change?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Hard ScienceWhat is the role of heat in the reaction of heating lead nitrate?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Hard ScienceWhich pair correctly identifies the brown gas and the solid residue formed on heating lead nitrate?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Hard ScienceWhat problem occurs if subscripts are changed while balancing an equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Hard ScienceIn which situation will a chemical equation not be considered balanced?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1Hard ScienceWhen is the aqueous symbol used?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Medium ScienceWhat is the correct meaning of a downward arrow in a chemical equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Medium ScienceWhat is the correct meaning of an upward arrow in a chemical equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Medium ScienceRusting of iron is an example of which process?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Medium ScienceRemoval of hydrogen from a substance generally indicates which process?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceIf hydrogen is added to a substance, it is generally related to which process?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhich process generally occurs when oxygen is added to a substance?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceIf metal A displaces metal B from an aqueous solution of its salt, which conclusion is correct?Class 10Metals and Non-metalsReactivity seriesLevel 5Medium ScienceWhy does silver chloride turn grey when kept in sunlight?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Medium