MCQ
Which one will give $F{e^{3 + }}$ ions in solution
- A${\left[ {Fe{{\left( {CN} \right)}_6}} \right]^{3 - }}$
- ✓$F{e_2}{\left( {S{O_4}} \right)_3}$
- C${\left[ {Fe{{\left( {CN} \right)}_6}} \right]^{4 - }}$
- D$N{H_4}{(S{O_4})_2}.FeS{O_4}.6{H_2}O$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Assertion $A$: Helium is used to dilute oxygen in diving apparatus.
Reason $R:$ Helium has high solubility in $O _2$.
In the light of the above statements, choose the correct answer from the options given below