A) \[\text{I}<III<II<IV\]
B) \[I>III>IV>II\]
C) \[FeC{{r}_{2}}{{O}_{4}}\xrightarrow{I}N{{a}_{2}}Cr{{O}_{4}}\xrightarrow{II}C{{r}_{2}}{{O}_{3}}\xrightarrow{III}Cr\]
D) All of these
Correct Answer: C
Solution :
The sodium ions of permit it are exchanged with calcium and magnesium ions when hard water is passed through it. \[3.0\] \[11.0\] \[10.0\] \[\overset{O}{\mathop{\overset{||}{\mathop{C{{H}_{3}}-C-C{{H}_{2}}-C{{H}_{2}}-COOH}}\,}}\,\]You need to login to perform this action.
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