Question 10 — How do the different properties of - Questions at the end of the chapter - Chapter 4 Class 7 - The World of Metals and Non-metals (Curiosity)

Last updated at August 17, 2026 by

Q10 (Difficult): How do the different properties of metals and non-metals determine their uses in everyday life?

Answer:
We have studied that metals and non-metals have contrasting properties like malleability , conductivity , and sonority . This is why their uses are different.

  • Malleability makes metals suitable for utensils and sheets
  • Good heat conduction makes metals ideal for cooking pans
  • Good electrical conduction makes metals perfect for wires
  • Sonority makes metals useful for bells and musical instruments
  • Non-metals are poor conductors so used for insulation
  • Non-metals like coal burn easily so used as fuel

Conclusion: Properties directly determine the practical applications of materials .

Properties Determine Uses Property → Use Metal Properties → Uses Non-metal Properties → Uses Malleability → Utensils, sheets → Cannot be flattened Heat conduction → Cooking pans → Insulation materials Electrical conduction → Electric wires → Insulator covers Sonority → Bells, instruments → Sound dampening Combustion → Not suitable fuel → Coal for fuel
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