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MDCAT Past Papers - SZABMU - Chemistry - Chap No 7 - 2023 Quiz

Attempt 10 MCQs on MDCAT Past Papers - SZABMU - Chemistry - Chap No 7 (Year 2023) | Quiz 1

1. In the reaction: Cr₂O₇²⁻ + 14H⁺ → 2Cr³⁺ + 7H₂O How many electrons are gained or lost by each chromium atom?

+12e
+3e
+6e
-6e

2. The oxidation number of oxygen in Na₂O₂ is:

-1
2
-2
1

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