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Electro Chemistry — Chemistry STD 12 — Question

Tamilnadu BoardEnglish MediumSTD 12ChemistryElectro Chemistry1 Mark
MCQ
The formula of rust is ………..
  • A
    $Fe _2 O _3$
  • ✓
    $Fe _2 O _3 \cdot XH _2 O$
  • C
    $FeO$
  • D
    $FeO \cdot xH _2 O$
✓

Answer

Correct option: B.
$Fe _2 O _3 \cdot XH _2 O$
$Fe _2 O _3 \cdot xH _2 O$

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