Question

The substances which vapourise during burning give flames.

• A. True
• B. False

Answer 1

The correct option is A True

The substances which vapourise during burning give flames. For example, kerosene oil and molten wax give flames because they get vapourised during burning.

Charcoal, on the other hand, does not vapourise and therefore does not produce a flame on burning. When it is burned under an adequate supply of air, it becomes red hot but no flame is produced.