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Q110 (IAS/2002) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Periodic table elements

Match List I (Oxdiation number) with List II (The element) and select the correct answer using the codes given below this lists

(Oxidation number) | (The element)
A. 2 | 1. Oxidation number of Mn in MnO2
B. 3 | 2. Oxidation number of S in H2S2O7
C. 4 | 3. Oxidation number of Ca in CaO2
D. 6 | 4. Oxidation number of Al in NaAIH4

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