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What is the correct meaning of a downward arrow in a chemical equation?

Answer and explanation

Correct answer: Formation of precipitate

A downward arrow (↓) in a chemical equation shows that an insoluble solid has formed from the reacting solutions. This solid settles out and is called a precipitate; for example, silver chloride may form as a precipitate in a reaction involving soluble silver and chloride compounds. An upward arrow represents gas evolution, whereas combustion and light emission require different descriptions. Thus, option B is correct.

Related tags

ScienceClass10Chemical-ReactionsPrecipitationPrecipitateState-SymbolsChemical Reactions And EquationsChemical Substances – Nature And Behaviour

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