Question

1. An electrode is a conductor used in an electrolytic cell and it conducts electricity into and out of an _________
2. Hydrogen combines with nitrogen to form__________
in the presence of iron as a catalyst
at a high pressure and temperature.
3. The___________
flame is used for cutting and welding of metals.
4.
A__________
reaction is a reaction in which both oxidation and reduction take place
simultaneously.​

Answer 1

Answer:

3 combustion flame 4 chemical reaction