Question

Choose from the following as to what matches the description given below:
(electro-chemical reaction, precipitation reaction, catalytic reaction, chemical displacement reacti
photochemical reaction)
1. 6CO2 + 6H2O→ C6H1206 + 602
2. 2KCIO ► 2KCI + 302
heat
electric current
3. 2H2O → 2H2 + O2
4. CuSO, + Fe -→ FeSO, + Cu
5. BaCl2 (sol.) + Na2SO4(sol.) -BaSO4 1 + 2NaCl(sol.)​

Answer 1

Answer:

answer is in the pic...........