The equations for three reactions are given.
1- 2O$^{2–}$ → O$_2$ + 4e$^–$
2- C + O$_2$ → CO$_2$
3- CaO + SiO$_2$ → CaSiO$_3$
These reactions take place in the extraction of metals.
Which row is correct?

1 )
A
B
3 )
C
4 )
D
تحلیل ویدئویی تست
منتظریم اولین نفر تحلیلش کنه!