Question

Which of the following does not produces a flame on burning?

Answer 1

Answer:

Coal does not produce flame, even charcoal doesn't produce flame

Answer 2

Coal or charcoal

Explanation:

The materials, such as wood, coke, LPG petrol, diesel, natural gas have one property in common. They produce heat on burning which is then put into different uses. Furthermore, some materials on burning produce flame and some do not. For example, a candle or coal gas on burning produces a flame, but not the coal or charcoal. Different substances produce different colours of flame depending on their chemical composition.