The ore chromite is : (a) \( \mathrm{FeCr}_{2} \mathrm{O}_{4} \) (b) \( \mathrm{CoCr}_{2} \mathr...

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The ore chromite is :
(a) \( \mathrm{FeCr}_{2} \mathrm{O}_{4} \)
(b) \( \mathrm{CoCr}_{2} \mathrm{O}_{3} \)
P
(c) \( \mathrm{CrFe}_{2} \mathrm{O}_{4} \)
(d) \( \mathrm{FeCr}_{2} \mathrm{O}_{3} \)
W
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