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प्रश्न
Write True/False against the following statement and also correct the false statement.
The substances which vapourise during burning, give flame.
विकल्प
True
False
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उत्तर
This statement is True.
Correct Statement:
The substances that vaporise during burning produce flames. When a fuel is heated, it undergoes vaporization and the vapours mix with oxygen in the air to combust, producing a flame. This is why liquid fuels like petrol, kerosene and alcohol give off flames when they burn, as they vaporise before combustion.
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संबंधित प्रश्न
Name the unit in which the calorific value of a fuel is expressed?
Make labeled diagram of a candle flame.
The substance that does not burn with flame is ______.
The substances which vaporise during ______ give flame.
Which is the luminous part of the flame?
Substances which vapourise during burning produce ______.
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 |
Name a few substances which produce flames on burning.
Explain the structure of a candle flame.
Why is the candle flame straight?
