Question

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.​

Answer 1

The substances that undergo combustion are called combustible substances. These include:​

• Charcoal​

• Straw​

• Cardboard​

• Paper​

• Wood​

• Candle​

• ​

The substances will not burn when exposed to fire are called non-combustible substances. These include:​

Non-combustible​

• Chalk​

• Stone ​

• Iron rod​

• Copper coin​

• Glass​