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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.
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संबंधित प्रश्न
Abida and Ramesh were doing an experiment in which water was to be heated in a beaker. Abida kept the beaker near the wick in the yellow part of the candle flame. Ramesh kept the beaker in the outermost part of the flame. Whose water will get heated in a shorter time?
Inner zone of flame : :______, outer zone of flame : :______
Magnesium ribbon on burning in air produces
The substances which vaporise during ______ give flame.
Write True/False against the following statement and also correct the false statement.
The substances which vapourise during burning, give 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 |
Match the following:
| 1. | Inner zone | a. | Yellow |
| 2. | Outer zone | b. | Borax powder |
| 3. | Middle zone | c. | Blue |
| 4. | Green flame | d. | Black |
Name a few substances which produce flames on burning.
Write a note on flame.
