5. Write short notes on [6M]
1. Metallurgical processes
2. Uses of common metals and non-metals
3. Noble metals
Answers
Answer:
Explanation:
1.. Metallurgical processes
Crushing and grinding: The first process in metallurgy is crushing of ores into a fine powder in a crusher or ball mill. This process is known as pulverization. 2. The concentration of ores: The process of removing impurities from ore is known as a concentration of minerals or ore dressing.
2. 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
3. noble metals
Noble metals refer to ruthenium (Ru), rhodium (Rh), palladium (Pd), silver (Ag), osmium (Os), iridium (Ir), platinum (Pt), and gold (Ag). Except Ag and Au, the others are collectively called platinum metals.
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