Question 4 of 10intermediate💡 UnderstandShort Answer3 marks

Why are only a few metals suitable for making jewellery?

Correct Answer

Only a few metals like gold and silver are suitable for making jewellery.

They possess exceptional malleability and ductility, have attractive metallic lustre, and do not corrode easily.

Gold and silver are the most malleable metals, allowing them to be beaten into thin sheets and drawn into wires for intricate designs.

Most other metals either corrode when exposed to air and moisture (like iron which rusts), are too hard to shape easily, lack the attractive appearance required for jewellery, or are too reactive with air and water (like sodium).

Exercise: Let Us Enhance Our Learning | Q: 4 | (Page Page 15)
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Explanation

The chapter mentions that gold and silver are the most malleable metals and that metals have metallic lustre. It also discusses corrosion of metals like iron, copper, and silver. The combination of properties—high malleability, ductility, lustre, and resistance to corrosion—makes only certain metals suitable for jewellery making.

Solution Steps

  1. Gold and silver possess exceptional malleability and ductility

  2. These metals have attractive metallic lustre

  3. They do not corrode easily, unlike most other metals

  4. Gold and silver can be beaten into thin sheets and drawn into wires for intricate designs

  5. Most other metals are unsuitable because they corrode, are too hard, lack attractive appearance, or are too reactive

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