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प्रश्न
On placing an inverted tumbler over a burning candle, the flame extinguishes after some time. This is because of non-availability of
विकल्प
oxygen
water vapours
carbon dioxide
wax
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उत्तर
oxygen
Explanation:
The flame extinguishes because of non-availability of oxygen. Air or oxygen is necessary for combustion.
APPEARS IN
संबंधित प्रश्न
Make a labelled diagram of a candle flame.
Which is the hottest part in the flame of candle ______.
Inner zone of flame : :______, outer zone of flame : :______
Magnesium ribbon on burning in air produces
The substance that does not burn with flame is ______.
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 a note on flame.
