Question

when nita's mother took out an old knife from her storehouse ,it look dull and covered with a brown and flaaky substance .it was not sharp enoght for her to cut thing with.what may have been the reason bihind it ? explain the formation of this brown substance



correct answer will mark as brainlist ​

Answer 1

Answer:

as the knife is made of a metal most common reason behind this is rust.

Explanation:

• because it was kept in place for a long time and it was not used so most of the dust and the dirty substance got attached to it, that's why it became rusty.(just a concept pls do not take it as a correct ans).