NEET 2024 Chemistry question on Redox and Electrochemistry

1. A.
   $H_2 + Cl_2 \\rightarrow 2HCl$
2. B.
   $BaCl_2 + Na_2SO_4 \\rightarrow BaSO_4 + 2NaCl$
3. C.
   $Zn + CuSO_4 \\rightarrow ZnSO_4 + Cu$
4. D.
   $2KClO_3 + I_2 \\rightarrow 2KIO_3 + Cl_2$

[NEET 2024]