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प्रश्न
The substances which vaporise during ______ give flame.
रिक्त स्थान भरें
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उत्तर
The substances which vaporise during burning give flame.
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Flame
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संबंधित प्रश्न
Make a labelled diagram of a candle flame.
The substance that does not burn with flame is ______.
The ______ temperature at which a substance catches fire is called its ______ temperature.
Match the following for the flame of a candle.
| Column A |
Column B |
Column C |
| (a) hottest part | (i) innermost zone of unburnt wax vapours | (x) blue |
| (b) moderately hot | (ii) middle zone of partial combustion | (y) black |
| (c) least hot | (iii) outer zone of complete combustion | (z) yellow |
If you hold a piece of iron wire with a pair of tongs inside a candle flame or a Bunsen burner flame, what will you observe? Will it produce a flame?
Which is the luminous part of the flame?
Match the following:
| 1. | White flame | a. | Table salt |
| 2. | Indigo flame | b. | Bleaching powder |
| 3. | Blue flame | c. | Potassium chloride |
| 4. | Orange flame | d. | Epsom salt |
Write a note on flame.
Explain the structure of a candle flame.
Why is the candle flame straight?
