Question

मोमबत्ती की ज्वाला के स्थिर हो जाने पर उसके ऊपर काँच का प्लेट ले जाने पर काला वलय क्यों बनता हैं ?

Answer 1

Answer:

Flame

A hot glowing body of ignited gas that is generated by something on fire is called Flame. Kerosene oil and molten wax are substances that give a flame while burning.Wood and charcoal are substances that do not vaporise, but still burn, without any flame.

Observe an LPG flame. Can you tell the colour of the flame.