The earth is covered with rock, gravel, sand and clay. What differentiates these is…
Paper and boards are as diverse as the applications for which it is to be used.…
Wood is simply, usable timber from trees. It is divided into two groups: Softwood and…
There are two main types of plastics. 1. Thermoset or thermosetting plastics. These…
Iron (FE) is one of the most common metals used in industry, construction, vehicles,…
