(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)?
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a) we paint objects made of iron to prevent their exposer to air,hence to prevent rusting
b)Nitrogen is filled in food packets because it is anti oxidant and hence prevents the food from getting stale
chemical reactions are responsible for them
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Answer:
A. We paint objects made up of iron so that due to humidity and air the iron might rust.
B. Nitrogen gas is filled in food packets so that the expiry time extends and saves it from rotting.
C. Sorry can't understand the third question. Please verify.
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