Advertisements
Advertisements
प्रश्न
Inner zone of flame : :______, outer zone of flame : :______
Advertisements
उत्तर
Inner zone of flame : : Black, outer zone of flame : : Blue
APPEARS IN
संबंधित प्रश्न
Make a labelled diagram of a candle flame.
Which is the hottest part in the flame of candle ______.
Make labeled diagram of a candle flame.
On placing an inverted tumbler over a burning candle, the flame extinguishes after some time. This is because of non-availability of
The ______ temperature at which a substance catches fire is called its ______ temperature.
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.
The substances which vapourise during burning, give flame.
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 |
Write a note on flame.
