Single Answer MCQ
Q-00039845
Which of the following reactions is an example of a redox reaction?
1
Zinc + Sulphuric acid → Zinc sulfate + Hydrogen
2
Water → Hydrogen + Oxygen
3
Sodium + Chlorine → Sodium chloride
4
Calcium carbonate → Calcium oxide + Carbon dioxide
Answer and Solution
Answer
A. Zinc + Sulphuric acid → Zinc sulfate + Hydrogen
Solution:
A redox reaction involves both reduction and oxidation. In the first option, zinc is oxidized and hydrogen ions are reduced, hence it qualifies as a redox reaction.
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