Graphite is corroded by_________________?
Correct answer: C. None of these
- A. Sulphuric acid (10%)
- B. Sea water
- C. None of these
- D. Hydrochloric acid
Explanation
Graphite is highly resistant to dilute sulphuric acid, hydrochloric acid and seawater under ordinary conditions. It is attacked mainly by strongly oxidising agents or hot concentrated oxidising acids, so none of the listed substances normally corrodes it.
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