Advertisements
Advertisements
प्रश्न
The substances which gave very ______ ignition temperature and can easily catch fire with a flame are called ______ substances.
उत्तर
The substances which gave very low ignition temperature and can easily catch fire with a flame are called inflammable substances.
APPEARS IN
संबंधित प्रश्न
Which is the hottest part in the flame of candle ______.
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?
The substance that does not burn with flame is
The ______ temperature at which a substance catches fire is called its ______ temperature.
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.
If you hold a piece of iron wire with a pair of tongs inside a candle flame or a Bunsen burner flame, what will you observe? Will it produce a flame?
Which is the luminous part of the 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 |
Why is the candle flame straight?
