Advertisements
Advertisements
Question
True or False – If False give the correct answer
All fuels form flame.
Options
True
False
Advertisements
Solution
False
Correct statement: All fuels do not form flame.
APPEARS IN
RELATED QUESTIONS
Which is the hottest part in the flame of candle ______.
Make labeled diagram of a candle flame.
Picture based question

Arul and Aakash were doing an experiment in which water was to be heated in a beaker. Arul kept the beaker near the wick in the yellow part of candle flame. Aakash kept the beaker in the outer most part to the flame. Whose water will get heated in a shorter time?
Magnesium ribbon on burning in air produces
The substance that does not burn with flame is ______.
On placing an inverted tumbler over a burning candle, the flame extinguishes after some time. This is because of non-availability of
The substances which gave very ______ ignition temperature and can easily catch fire with a flame are called ______ substances.
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 |
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 |
Why is the candle flame straight?
