d- and f-Block Elements · JEE Main previous year questions

2014 1 question

1. Q742014 · 6 Apr 2014 · Shift 1

   Which series of reactions correctly represents chemical relations related to iron and its compound?

   1. A.$\mathrm{Fe}\stackrel{dil.{\mathrm{H}}_2\mathrm{S}{\mathrm{O}}_4}{\to }\mathrm{FeS}{\mathrm{O}}_4\stackrel{{\mathrm{H}}_2\mathrm{S}{\mathrm{O}}_4,{\mathrm{O}}_2}{\to }\mathrm{F}{\mathrm{e}}_2(\mathrm{S}{\mathrm{O}}_4{)}_3\stackrel{heat}{\to }\mathrm{Fe}$
   2. B.$\mathrm{Fe}\stackrel{{\mathrm{O}}_2,heat}{\to }\mathrm{FeO}\stackrel{dil.{\mathrm{H}}_2\mathrm{S}{\mathrm{O}}_4}{\to }\mathrm{FeS}{\mathrm{O}}_4\stackrel{heat}{\to }\mathrm{Fe}$
   3. C.$\mathrm{Fe}\stackrel{\mathrm{C}{\mathrm{l}}_2,heat}{\to }\mathrm{FeC}{\mathrm{l}}_3\stackrel{heat,air}{\to }\mathrm{FeC}{\mathrm{l}}_2\stackrel{\mathrm{Zn}}{\to }\mathrm{Fe}$
   4. D.$\mathrm{Fe}\stackrel{{\mathrm{O}}_2,heat}{\to }\mathrm{F}{\mathrm{e}}_3{\mathrm{O}}_4\stackrel{\mathrm{CO},600^{\circ }\mathrm{C}}{\to }\mathrm{FeO}\stackrel{\mathrm{CO},700^{\circ }\mathrm{C}}{\to }\mathrm{Fe}$
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   Answer: D