A container contains 20 L mixture in which there is 10...

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A container contains 20 L mixture in which there is 10% sulphuric acid. Find the quantity of sulphuric acid to be added in it to make the solution of contain 25% sulphuric acid.

A. 2 L

B. 3 L

C. 4 L

D. 5 L

Answer: Option C

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