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प्रश्न
Which is the hottest part in the flame of candle ______.
पर्याय
Blue
Yellow
Black
Way part
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उत्तर
Which is the hottest part in the flame of candle Blue.
APPEARS IN
संबंधित प्रश्न
The substance that does not burn with flame is ______.
The ______ temperature at which a substance catches fire is called its ______ temperature.
The substances which gave very ______ ignition temperature and can easily catch fire with a flame are called ______ substances.
The substances which vaporise during ______ give flame.
Anu wants to boil water quickly in a test tube. On observing the different zones of the flame, she is not able to decide which zone of the flame will be best for boiling water quickly. Help her in this activity.
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 |
Write True/False against the following statement and also correct the false statement.
Middle zone is the hottest zone of a flame.
Write True/False against the following statement and also correct the false statement.
The substances which vapourise during burning, give flame.
Explain the structure of a candle flame.
Why is the candle flame straight?
