Explanation:

Here’s the thing—chromite’s scientific name is Iron Chromium Oxide. Let’s look at each option for clarity:

- Option 1: Copper Chromium Oxide

? Chromite doesn’t have copper in its formula. Not the one we’re looking for.

- Option 2: Iron Chromium Oxide

This is the correct answer. Chemically, chromite is FeCr2O4—iron (Fe), chromium (Cr), and oxygen.

- Option 3: Silver Chromium Oxide

? Silver (Ag) isn’t part of chromite at all. Not even close.

- Option 4: Aluminium Chromium Oxide

? Not it either—aluminum doesn’t figure in chromite’s makeup.

So, chromite is all about iron and chromium bonded with oxygen. That’s the actual compound you dig out of the ground in those shiny black chunks.