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What is the correct meaning of upward and downward arrows in a chemical equation?

Answer and explanation

Correct answer: Upward arrow shows gas and downward arrow shows precipitate

In conventional chemical equations, an upward arrow (↑) indicates that a gas is evolved during the reaction. A downward arrow (↓) indicates the formation of an insoluble solid precipitate from a solution. Thus option A correctly assigns both symbols. They do not specifically represent heat or light; those conditions are usually written above the reaction arrow or shown separately.

Related tags

ScienceClass-10Chemical-EquationsGas-PrecipitateChemical Reactions And EquationsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourClass 10 Mcq

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