Question

(a) why do we paint made up of iron?
(b) why is nitrogen gas filled in food packets containing oil and fats​

Answer 1

Answer:

a to not make it rust

b to keep then frish

Answer 2

Answer:

1 ) to avoid corrosion i. e rusting as corrosion makes iron weak

Explanation:

if food packets are not packed then they will be spoiled and will be not good to eat