5. Write short notes on [6M]
1. Metallurgical processes
2. Uses of common metals and non-metals
3. Noble metals
Answers
Answer:
METALLURGICAL ENGINEERING
Metallurgical engineering is based on the principles of science and engineering, and may be divided into process metallurgy, which is concerned with extracting metals from their ores to make refined alloys, and physical metallurgy, which involves the shaping, alloying, heat treatment, joining, corrosion protection.
USES OF COMMON METALS AND NON-METALS
Copper is used for making electrical wires, cooking utensils, etc. Zinc is mainly used as a protective coating for iron. Aluminium is used for making electrical cables, packaging, cooking utensils, etc. Non-metals Hydrogen is used for the synthesis of ammonia and methyl alcohol, in welding torches, etc.
NOBLE METALS
noble metals are metallic elements that show outstanding resistance to chemical attack even at high temperatures. They are well known for their catalytic properties and associated capacity to facilitate or control the rates of chemical reactions.