Question

B. Fill in the blanks :
1. The process of burning in the presence of oxygen is called_Combustion
2.
is the example of a inflammable substance,
3. A fire caused due to electricity is extinguished by using
4. Different fuels have different
5. The middle part of flame is red due to
combustion.​

Answer 1

1. complete combustion
2. petrol
3. foam

5. partial combustion