Dilute and concentrated solution — task. Science CBSE, Class 9 New.

PDF chapter test TRY NOW

Choose the correct answer:

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?

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

2. Rahul added \(5\) teaspoons of sugar to one glass of water and only \(2\) teaspoons to another glass of the same size. Which glass has the more concentrated sugar solution?

The one with \(2\) teaspoons of sugar
The one with \(5\) teaspoons of sugar
Both are the same
Depends on the temperature

Previous exercise

Exit to the topic

Next exercise

Send feedback

Did you find an error?

Send it to us!

9. Dilute and concentrated solution

Exercise condition: