Question

give reason ;
1 why soda acid type extinguisher can't be used in electric wires fighting
2 liquid carbon-dioxide fire extinguisher can be used for both electrical and oil fires.

Answer 1

1. Both are highlyconductive and would pose another danger. In general, you can stop, contain, suppress or prevent fire.

To stop a fire, you have to halt the chemical process of combustion. You usually do this by either removing the source of energy that keeps combustion going, or you alter the chemistry and stop it that way.