Explain the Following Giving Example: Suspension - Science

Short Note

Explain the following giving example:




Suspensions are heterogeneous mixtures. The solute particles in this mixture remain suspended throughout the bulk of the medium. The particles can be seen with naked eyes. Suspension shows the Tyndall effect. The solute particles settle down when the mixture is left undisturbed. This means that suspensions are unstable. Suspensions can be separated by the method of filtration. For example, mixtures of chalk powder and water, wheat flour and water.

Concept: Solutions
  Is there an error in this question or solution?
Chapter 2: Is Matter around us Pure - Exercises [Page 29]


NCERT Science Class 9
Chapter 2 Is Matter around us Pure
Exercises | Q 4.4 | Page 29

Video TutorialsVIEW ALL [1]


Write the steps you would use for making tea. Use the words: solution, solvent, solute, dissolve, soluble, insoluble, filtrate and residue.

Pragya tested the solubility of three different substances at different temperatures and collected the data as given below( results are given in the following table, as grams of substance dissolved in 100 grams of water to form a saturated solution).

Substance dissolved Temperature in K
283 293 313 333 353
Potassium nitrate 21 32 62 106 167
Sodium chloride 36 36 36 37 37
Potassium chloride 35 35 40 46 54
Ammonium chloride 24 37 41 55 66

(a)  What mass of potassium nitrate would be needed to produce a saturated solution of potassium nitrate in 50 grams of water at 313 K?

(b)  Pragya makes a saturated solution of potassium chloride in water at 353 K and leaves the solution to cool at room temperature. What would she observe as the solution cools? Explain.

(c)  Find the solubility of each salt at 293 K. What salt has the highest solubility at this temperature?

(d)  What is the effect of change of temperature on the solubility of a salt?

Explain the following giving example.
saturated solution

The number of components in a binary solution is ______

The component present in a lesser amount, in a solution, is called ______

Define the term: Solution

Give an example of gas in a liquid.

Give an example of a solid in a liquid.

Give an example of solid in solid.

Give an example of gas in gas.

Smoke and fog both are aerosols. In what way are they different?

The teacher instructed three students ‘A’, ‘B’ and ‘C’ respectively to prepare a 50% (mass by volume) solution of sodium hydroxide (NaOH). ‘A’ dissolved 50g of NaOH in 100 mL of water, ‘B’ dissolved 50g of NaOH in 100g of water while ‘C’ dissolved 50g of NaOH in water to make 100 mL of solution. Which one of them has made the desired solution and why?

Name the process associated with the following

A potassium permanganate crystal is in a beaker and water is poured into the beaker with stirring.

A solution is always a liquid. Comment.

Can a solution be heterogeneous?

During an experiment, the students were asked to prepare a 10% (Mass/Mass) solution of sugar in water. Ramesh dissolved 10g of sugar in 100g of water while Sarika prepared it by dissolving 10g of sugar in water to make 100g of the solution.

(a) Are the two solutions of the same concentration

(b) Compare the mass % of the two solutions.

Arun has prepared a 0.01% (by mass) solution of sodium chloride in water. Which of the following correctly represents the composition of the solutions?

When the solid (Solute) dissolves in a liquid (Solvent), it becomes a solution.

______ is the major difference between true solutions, suspensions, and colloids.

What is a solute?

What is the solvent?


      Forgot password?
Use app×