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secondary 4 | E Maths
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Hello, Manytutors if you see this there is an issue with uploading questions online for all subjects, hence have to ask it under "E math" (as app online has e and a math selection).
Can I know how to get D?
So, solution M must have had a reducing agent in to reduce those Mn⁷⁺ ions
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Topic 1.3. Used to test for SO2 gas