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Chemical Equations

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

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 substance A loses oxygen and substance B loses hydrogen which processes occur respectively?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Expert ScienceWhy is a precipitate shown with a downward arrow?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Easy ScienceWhat will be the ratio of magnesium atoms to oxygen atoms in five formula units of magnesium oxide?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Medium ScienceIf the reactants and products are correct but the atoms of one element are unequal, what is the conclusion?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Medium ScienceWhat is the main difference between a skeletal equation and a balanced equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Expert ScienceWhy is changing subscripts considered a serious error while balancing a chemical equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Hard ScienceIn an unknown process a new substance formed gas evolved and total mass remained same in a closed container. What is the most suitable conclusion?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4Expert ScienceWhy is a precipitate shown by a downward arrow in a chemical equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4Medium ScienceWhen silver chloride is exposed to light, its colour changes from white to grey. This is an example of which type of decomposition reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4Expert ScienceWhich solid and gas are formed when calcium carbonate is heated?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4Expert ScienceWhile balancing a chemical equation, why should the subscripts in chemical formulae not be changed?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4Expert ScienceIn which of the following reactions do oxidation and reduction occur simultaneously?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 3Expert ScienceWhat is the correct difference between the symbols [aq] and [l] in a chemical equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 3Expert ScienceWhich of the following equations is a correct example of a precipitation reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 3Expert ScienceIf heat is shown on the reactant side of a chemical equation and one compound breaks down to form two or more products, what is the correct classification of the reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 3Expert ScienceWhich statement about oxidation and reduction is correct in the given equation? \(2\mathrm{FeCl_3} + \mathrm{SnCl_2} \rightarrow 2\mathrm{FeCl_2} + \mathrm{SnCl_4}\)Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 3Expert ScienceWhich of the following equations represents a displacement reaction in which a more reactive metal displaces a less reactive metal from its aqueous salt solution?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 3Expert ScienceWhich of the following is a redox reaction in which the oxidation number of one element increases and that of another element decreases?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 3Expert ScienceWhat type of reaction is represented by \(2Pb(NO_3)_2 \xrightarrow{\Delta} 2PbO + 4NO_2 + O_2\)?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 3Expert