Dilute and concentrated solution — task. Chemistry CBSE Live product, Class 9 (2026-27).

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1. Sarah prepared two sugar solutions using different masses of sugar. To compare their concentrations, she used the mass by mass percentage formula. What is the correct formula for calculating mass by mass percentage?

\(\text{Concentration of a solution}\) \(=\) \(\frac{\text{Amount of solvent}}{\text{Amount of solution}}\)
\(\text{Concentration of a solution}\) \(=\) \(\frac{\text{Amount of solvent}}{\text{Amount of solute}}\)
\(\text{Concentration of a solution}\) \(=\) \(\frac{\text{Amount of solution}}{\text{Amount of solute}}\)
\(\text{Concentration of a solution}\) \(=\) \(\frac{\text{Amount of solute}}{\text{Amount of solution}}\)

2. Which statement best defines a concentrated solution?

A solution containing a large amount of solute compared to the solvent
A solution containing a small amount of solute
A solution that cannot dissolve any more solute
A solution containing no solute

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1. Dilute and concentrated solution

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