Question

(a)Why do we paint made up of iron?
(b)Why is nitrogen gas filled in food packets containing oil and fats?
(c)which posses are responsible for (a)and(b)?​

Answer 1

Answer:

a) When iron is exposed to the environmental condition it terribly reacts with water and air and ends up with iron rusting. Iron articles are therefore painted off so that iron can not react with water and air. This is the way to avoid a reaction which would concurrently stop rusting of iron.

b) Nitrogen is an inert gas, and is used during the packaging process to exclude and remove air and in particular, oxygen. Oxygen is highly-reactive, so this means it likes to combine with other molecules, which results in food spoiling or losing its' freshness.