6. A container contains 10 L mixtur...
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6. A container contains 10 L mixture in which there is 10% sulphuric acid. To make the solution to contain 25% sulphuric acid, the quantity of sulphuric acid to be added in it, is (a) 1 L (b) 2L (C) 3L (d) 4L

11th - 12th Class
Maths
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( 10 % ) of Bulpluic acid in ( 10 mathrm{L} ) ( Rightarrow frac{10}{100} times 10 mathrm{L}=1 mathrm{L} ) ( 1 mathrm{H}_{2} mathrm{SO} 4 mathrm{J} ) 10 Make it 25%. ( frac{12+x L}{10 L+x L}=frac{2 s}{100} ) ( Rightarrow quad 100(1+x) ) ( =25(10+x) ) ( 4+4 x=10+x ) [ x=2 L ]
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