General Science Chemistry MCQs

Q.  What of these is the chemical formula of Rust?

a. Fe₂O₃. nH₂O
b. Fe₂Cl₃. nH₂O
c. FeCO₂. nH₂O
d. FeO. nH₂O


ANSWER: See Answer
 
Rusting is the corrosion of Iron in which iron (Fe) combines with oxygen to form rust, or iron oxide. Fe₂O₃. nH2O is usually called as hydrated ferric Oxide.
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