ISRO Technician-B Fitter Question Paper - 2016 (Set - 1) with Answer Key

Ferrous Metals The Ferrous metals are those which have the iron as their main constituent, such as cast iron, wrought iron and steel.

Non-ferrous metals The non-ferrous metals are those which have a metal other than iron as their main constituent, such as copper, aluminium, brass, tin, zinc etc.

Reducer is used for connecting two pipes with different diameter.