Q. The pair of compounds that can exist together is :
A) $FeCl_3, SnCl_2$
B) $HgCl_2, SnCl_2$
C) $FeCl_2, SnCl_2$
D) $FeCl_3$, KI
Explanation
[Solution] $Fe^{2+}$ and $Sn^{2+}$ do not react with each other; in the other pairs $SnCl_2$ or $I^-$ reduces $Fe^{3+}$/$Hg^{2+}$. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.