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Boojho wants to separate the following m...

Boojho wants to separate the following materials as combustible and non-combustible. Can you help him?
Charcoal, chalk, stone, iron rod, copper coin, straw,
cardboard, glass, paper, candle, wood.

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Knowledge Check

  • Metals like copper, aluminium and silver allow electricity to flow through them. They are good conductors of electricity. Other substances like plastic, rubber and cloth do not allow electricity to flow through them. They are insulators and are grouped under non-metals. Similarly, some metals like iron, copper, aluminium and steel get heated easily. They are good conductors of heat. Non-metals like paper and wood do not get heated easily. These are poor conductors of heat. Metals are malleable, ductile and sonorous. Which of these materials would you choose to make a bell for temple?

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