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What does a downward arrow in a chemical equation indicate?

Answer and explanation

Correct answer: Formation of precipitate

In the usual school notation for a chemical equation, a downward arrow indicates that an insoluble solid has separated from the solution. Such a solid is called a precipitate, so the symbol denotes formation of a precipitate. A gas is commonly shown by an upward arrow, while heat and light are written as energy conditions or products rather than represented by this downward arrow. Hence option B is correct.

Related tags

ScienceClass10Chemical EquationsPrecipitateSymbolsChemical Reactions And EquationsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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