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Redox Reactions
NEET Chemistry • 10 questions • Free on ExamBattle
Practice Questions
Q1
Oxidation is defined as:
- A. Gain of electrons
- B. Loss of electrons
- C. Gain of hydrogen
- D. Loss of oxygen
Q2
The oxidation state of oxygen in H₂O₂ is:
- A. -2
- B. -1
- C. +2
- D. 0
Q3
In the reaction 2Mg + O₂ → 2MgO, magnesium is:
- A. Reduced
- B. Oxidised
- C. Neither oxidised nor reduced
- D. Both oxidised and reduced
Q4
The oxidation number of Cr in K₂Cr₂O₇ is:
- A. +3
- B. +6
- C. +2
- D. +7
Q5
A disproportionation reaction is one where the same element is:
- A. Only oxidised
- B. Both oxidised and reduced simultaneously
- C. Only reduced
- D. Neither oxidised nor reduced
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