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In a chemical equation, the symbol (s), (l), (g), (aq) represent:
ACharge of the species
BTemperature scale
CNumber of moles
DPhysical state of reactants/products
Answer & Solution
Correct answer: D. Physical state of reactants/products
1. (s) solid, (l) liquid, (g) gas, (aq) aqueous solution.
2. They make equations more informative without changing balance.
3. Often written in subscript: e.g. 2 H₂(g) + O₂(g) → 2 H₂O(l).
_Source: NCERT Class 10 Science Ch 1 §1.1 Writing Chemical Equations_
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