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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.
पर्याय
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
Make a labelled diagram of a candle flame.
True or False – If False give the correct answer
All fuels form flame.
If 4.5kg of fuel is completely burnt and amount of heat produced stands measured at 1, 80,000 KJ what is the calorific value.
The substances which vaporise during ______ give flame.
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?
Write True/False against the following statement and also correct the false statement.
Middle zone is the hottest zone of a 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.
