What is the coldest color?

Blue represents the coldest area in front of the orange (complementary color of blue see complementary colors) which, in turn, is the hottest sector. Green and purple and other shades of blue are in the so-called transition zones COLD COLORS.

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Which is the hottest part in the flame of the candle?

innermost part The innermost part of a candle flame is the hottest. Then, which is the hottest part of the flame? Non-luminous zone ? The Hottest part of the gas flame is known as the Non-luminous zone. The Non-luminous zone flame is blue. In this zone, complete combustion of the fuel takes place because there is plenty of air around it. The outermost zone has the highest temperature in the flame.

Then, what substances produce flames?

Some of the substances which burn by producing flames are LPG, CNG, biogas, wax, camphor, magnesium, kerosene oil, mustard oil. If we heat magnesium ribbon over a burner,we find that the magnesium ribbon burns by producing a brilliant white flame. Wax candle and kerosene oil lamp have wicks. Accordingly, what is dark zone of flame? This zone is the outermost layer of the flame. It is the part of flame occurring around the wick of the candle. It mostly contains all the unburnt wax. So when the candle is lit up the unburnt vapours move away upward from the wick.

Why does a candle produce light?

All the light a candle makes comes from a chemical reaction known as combustion in which the wax (made from carbon-based chemicals typically derived from petroleum) reacts with oxygen in the air to make a colorless gas called carbon dioxide. Water is also produced in the form of steam. Which one does not form a flame? 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 so does not produce a flame.