Question

(a) Why do we paint objects made up of iron?
(b) Why is Nitrogen gas filled in food packets containing of fats?
(c) Which processes are responsible for (a) and (b) ?​

Answer 1

Answer:

1) not to get rust

2) to not get foul

4) a) iron oxide b) products used in foods

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Answer 2

Answer:

a) We apply paint objects made up of iron so that it does not get rust.

b) Food packets are flushed with nitrogen to prevent it from rancidity.

c) Rusting

Rancidity

ADDITIONAL INFORMATION

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Rancidity - When food left open for long time , it get oxidized and produce a sabstance called racid. which causes bad smell and bad odour to food.

Rusting - when iron articles come in contact with air and moisture it forms a subatance called rust which made the article dull.