Question

Appu notices some spots of rust on the hammer in his tool box. His father tells him to use a piece of sandpaper and rub the rust off and assures him that
the rust will not appear again.

Appu's father is................

1)right, sandpaper acts as an anti-corrosive coating and prevents iron from rusting

2) wrong, sandpaper removes the layer of rust, but it cannot prevent future rusting

3) right, sandpaper forms a new iron compound and this compound does not rust

4)wrong, sandpaper only changes the colour of rust on a surface temporarily

​

Answer 1

Answer:

trew

Explanation:

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