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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।

ScienceWhy is it not correct to depend on only one sign while identifying a reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 6Easy ScienceIf the temperature of a reaction mixture rises without external heating, what type of reaction does this indicate?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 6Easy ScienceIf temperature decreases in a reaction what type can it be?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 6Easy ScienceIn a combustion reaction, energy is generally released in which form?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 6Easy ScienceWhy is it wrong to change chemical formulae while balancing a chemical equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 6Easy ScienceWhich symbol denotes the state of a substance dissolved in water in a chemical equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 6Easy ScienceWhich symbol represents the gaseous state in a chemical equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 6Easy ScienceWhich is the symbol for liquid state in a chemical equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 6Easy ScienceWhich state symbol represents a substance in the solid state in a chemical equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 6Easy ScienceWhat does a downward arrow in a chemical equation indicate?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 6Easy ScienceWhat is reduced when food is kept in a cool place to prevent rancidity?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 6Easy ScienceWhat is the development of an unpleasant smell and taste in oils and fats due to oxidation called?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 6Easy ScienceHow does applying oil to iron mainly prevent rusting?Class 10Metals and Non-metalsReactivity seriesLevel 6Easy ScienceWhat coloured coating forms on an iron nail when it is placed in copper sulphate solution?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 6Easy ScienceWhen an iron nail is placed in a blue copper sulphate solution, which substance is formed in the solution?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 6Easy ScienceIn the thermal decomposition of lead nitrate, in which form is energy supplied?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 6Easy ScienceWhy does the blue colour of copper sulphate solution fade when zinc is added?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4Easy