AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
The notations (s), (l), (g), and (aq) represent the physical states of substances — solid, liquid, gas, and aqueous solution (dissolved in water) respectively.
Source: Chapter 1, Section 1.1 Chemical Equations
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Examiners award the mark for correctly identifying all four symbols with their meanings. Remember: (aq) means the substance is dissolved in water — this is the one students most often forget or confuse. Write all four in order for full credit.