Most of the metals are naturally available in a chemically shared condition which we know as ORE. It is very usual to get an oxide, a carbonate, a sulphide or another compound in nature. In another words, we can say that most of the...

Measuring instruments may be defined as device for determining the value or magnitude of quantity or variable. Measurement generally involves using instruments as physical means of determining a quantity or variable. These instruments serve as an extension of human faculties and enables the man to...