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 rise through the wick and are vapourised during burning and form flames. Charcoal, on the other hand, does not vapourise and does not produce a flame. When it is burned under adequate supply of air, it becomes red hot but no flame is produced.