1.
To join railway tracks, which of the following reactions is used?
2.
In this reaction, which of the following acts as a reducing agent?
\(3MnO_2+4Al→Mn+2Al_2O_3+Heat\)
\(3MnO_2+4Al→Mn+2Al_2O_3+Heat\)
3.
In electrolytic reduction of sodium chloride, sodium is deposited at __________ and chlorine is deposited at __________.