Question

Coal burns with ______

a. Flame

b. Only glow

c. Both flame and glow

d. None of these​

Answer 1

Coal burns with b. Only glow

Why does coal not burn when heated?

• The substances which vaporize upon heating produce flame.
• Coal does not vaporize when heated and hence it does not produce a flame.
• Coal produces an orange/red glow while burning.
• Coal as well as charcoal give heat without them flaming.

Hence, the correct option is b. only glow

Answer 2

Explanation:

• Coal burns with only glow.