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प्रश्न
Write True/False against the following statement and also correct the false statement.
Middle zone is the hottest zone of a flame.
विकल्प
True
False
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उत्तर
This statement is False.
Correct Statement:
Outer zone is the hottest zone of a flame.
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संबंधित प्रश्न
True or False – If False give the correct answer
All fuels form flame.
Name the unit in which the calorific value of a fuel is expressed?
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| 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 |
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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.
Why is the candle flame straight?
