Give reasons for the following:
$(i)$ Keeping food in airtight containers helps in preventing rancidity.
$(i)$ Keeping food in airtight containers helps in preventing rancidity.
(N/A) $(i)$ Airtight containers prevent air (oxygen) from coming into contact with the food,which inhibits the oxidation of fats and oils present in the food. Since oxidation is the primary cause of rancidity,preventing it ensures that the food does not become rancid,thereby preserving its original smell and taste.
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Which one is a chemical change: Rusting of iron or melting of iron?
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View Solution$(a)$ Define corrosion.
$(b)$ What is corrosion of iron called?
$(c)$ How will you recognise the corrosion of silver?
$(b)$ What is corrosion of iron called?
$(c)$ How will you recognise the corrosion of silver?
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View Solution$A$ student has been collecting silver coins and copper coins. One day she observed a black coating on silver coins and a green coating on copper coins. Which chemical phenomenon is responsible for these coatings? Write the chemical name of black and green coatings.
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Keeping food in airtight containers helps to slow down oxidation.
Keeping food in airtight containers helps to slow down oxidation.
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Due to corrosion, iron gets a brown coating, copper gets a green coating, and silver gets a black coating.
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