material.
8. Temperature at which a substance starts burning is called
burning
Igni
B. Write T' for true and 'F' for false.
1. All substances burn with a flame. Yolso
2. No substance can burn without oxygen. True
3. An explosion is an example of spontaneous combustion. Trup
4. Petrol fire can be extinguished by water. false
5. Electric fires should not be extinguished by water.
Mhb. f.11.
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Answer:
8.The auto-ignition temperature or kindling point of a substance is the lowest temperature at which it will spontaneously ignite in a normal atmosphere without an external source of ignition, such as a flame or spark.
b.
1.False
2.True as said
3.true as said
4.false as said
5.true
Explanation:
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