Question

Answer the following science question​

Answer 1

Explanation:

a)

because it was kept open. when kept open it(iron) reacted with oxygen in presence of moisture n got rusted

b)

Fe+O2+ water---> ferric oxide

c)

when painted, the contact of iron with atmosphere is cut off therefore preventing iron from rusting

d)

1. Zinc Coating galvanising

2.chrom plating

3.tin plating

4.Alloying