Teflon (PTFE) is corroded by_______________?
Correct answer: C. None of these
- A. Hydrochloric acid (10%)
- B. Hydrochloric acid (95%)
- C. None of these
- D. Sulphuric acid
Explanation
PTFE is exceptionally resistant to both dilute and concentrated hydrochloric acid and to sulphuric acid under ordinary conditions. It is attacked mainly by materials such as molten alkali metals and elemental fluorine, so none of the listed acids is the answer.
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