Question

Q-9
Answer following questions. ( Each question carries 3 marks)
(a) Why do we paint objects made up of iron?
(b) Why is Nitrogen gas filled in food packets containing oil and fats?
(C) Which processes are responsible for (a) and (b)?​

Answer 1

Answer:

a.to prevent iron from rusting

b.because nitrogen. does not react with the materials in it

c.chemical process

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