State important applications of colloids in everyday life.

Take three test tubes and label them as $\mathrm{A}$, $\mathrm{B}$ and $\mathrm{C}$. Fill upto two thirds with sugar solution, muddy water and milk, respectively. Allow these to stand on test tube stand for some time.

In which of the test tubes will you observe particles settling down?

Take three test tubes and label them as $\mathrm{A}$, $\mathrm{B}$ and $\mathrm{C}$. Fill upto two thirds with sugar solution, muddy water and milk, respectively. Allow these to stand on test tube stand for some time.

Which of the test tube will look transparent?

Take three test tubes and label them as $\mathrm{A}$, $\mathrm{B}$ and $\mathrm{C}$. Fill upto two thirds with sugar solution, muddy water and milk, respectively. Allow these to stand on test tube stand for some time.

Which of the test tube will look translucent?

Define solubility. Explain the effect of temperature and pressure on the solubility of a solution with examples.

What do you understand by the term Tyndall effect? Describe an experiment in support of your answer.

Draw a flow diagram of processes involved in obtaining gases like nitrogen, oxygen, argon from air.