Question

CORROSION
ou have learnt the following about corrosion in Chapter 1
Silver articles become black after some time when exposed to at
This is because it reacts with sulphur in the air to form a coating
of silver sulphide
Copper reacts with moist carbon dioxide in the air and slowly loses
its shiny brown surface and gains a green coat. This green
substance is copper carbonate
Iron when exposed to moist air for a long time acquires a coating
of a brown flaky substance called rust.
Let us find out the conditions under which tron rusts
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Answer 1

Answer:

Explanation:

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