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47. A sample of H2O2 solution is labelled as 28 volume. Its percentage by volume strength is (a) 6.5 (b) 7.5 (c) 5.5 (d) 8.5

Answer» 47. A sample of H2O2 solution is labelled as 28 volume. Its percentage by volume strength is (a) 6.5 (b) 7.5 (c) 5.5 (d) 8.5


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