Paheli watched her grandmother making mango pickle. After she bottled the pickle, her
grandmother poured oil on top of the pickle before closing the lid. Pahelinwanted to know why
oil was poured. Can you help her undersand, Why?
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Answer:
Cause oil is a preservative
Explanation:
Her grandmother did so too as oil acts as a preservative and prevents bacteria to be formed. This is known as preservation by oil.
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