Question

Name and explain the phenomenon of light due to which the path of a beam of light becomes visible when it enters a smoke filled room through a small hole. Also state the dependence of colour of the light we receive on the size of the particle of the medium through which the beam of light passes.

Distinguish among true solution, suspension and colloid in a tabular form under the following heads:

What is meant by concentration of a solution? How will you prepare a 10% solution of glucose in water?

Draw a neat and labelled diagram of the apparatus used to separate components of blue-black ink. Name the process and state the principle involved.