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प्रश्न
The substance that does not burn with flame is ______.
पर्याय
LPG
camphor
dry grass
charcoal
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उत्तर
The substance that does not burn with flame is charcoal.
Explanation:
Charcoal is a solid fuel which does not vaporise on heating. So, charcoal does not burn by producing a flame. It only glows on combustion.
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संबंधित प्रश्न
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Picture based question
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| 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 |
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| 1. | Inner zone | a. | Yellow |
| 2. | Outer zone | b. | Borax powder |
| 3. | Middle zone | c. | Blue |
| 4. | Green flame | d. | Black |
Explain the structure of a candle flame.
Why is the candle flame straight?
