Make a scrap book containing picture of different types of febric and name them.

Name different type of soaps.

Name the different types of lenses .

Prepare a scrap book with pictures of different wool yielding animals.

Name the different types of molecular masses of polymers .

_________ useful to make different types of fibres.

Tanks A and B open at the top contain two different liquids upto certain height in them. A hole is made to the wall of each tank at a depth h from the surface of the liquid. The area of the hole in B is twice that of in A. If the liquid mass flux through each hole is equal, then the ratio of the densities of the liquids respectively, is

Collect pictures about different forests in the world and paste them in your scrap.

In East India silk is called pat. You may collect different pieces of silk fabric from a cloth store and write the names of the types of fabric and make a chart.