Question
How does rusting of iron occur?
✓
Answer
Iron when exposed to moist air forms a reddish layer of hydrated ferric oxide.
$
2 Fe +3 O _2+x H _2 O \longrightarrow 2 Fe _2 O _3, x H _2 O
$
Ferric oxide (rust)
$
2 Fe +3 O _2+x H _2 O \longrightarrow 2 Fe _2 O _3, x H _2 O
$
Ferric oxide (rust)
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Define : Principal axis
Write the harmful effects of ozone depletion?
| Column I | Column II |
| (1) Dobereiner | (a) Atomic number |
| (2) New lands | (b) Triads |
| (3) Moseley | (c) Atomic mass |
| (4) Mendeleev | (d) Octaves |
| (e) Sodium |
Ciliary muscles of human eye can contract or relax. How does it help in the normal functioning
of the eye?
of the eye?
What happens when a piece of iron metal is placed in copper sulphate solution? Name the type ofreaction involved.
Identify the animal given in the figure and label the figure:
An electric fan runs from the 230V mains. The current flowing through it is 0.4A. At what rate is electrical energy transferred by the fan?
Write any two uses of biogas.
What do you understand by the term “electric potential”? (or potential) at a point? What is the unit of electric potential?
Write the names and structural formulae of all the possible isomers of hexane.