Why do we need Sulfuric Acid?

Question

Where is it found in everyday items/food, etc...

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Answer 1

It is also an excellent absorber for water in Industrial Chemical Plants.

Is important to the Chemical Industry for production of Plastics.

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Answer 2

The most common place to find it is in lead-acid batteries like the ones in cars. It acts as the electrolyte.

Apart from that you don't find it in everyday items, and certainly not in food, because it is corrosive. However, it is used to make all sorts of other chemicals, plastics, medicines, etc.