Sulphuric acid pickling tanks are lined with__________________?
Correct answer: B. Rubber
- A. Nickel
- B. Rubber
- C. Aluminium
- D. Glass
Explanation
Sulphuric-acid pickling tanks are commonly protected with rubber linings, which isolate the structural tank metal from the acid. The lining provides corrosion resistance without requiring the entire tank to be made from an expensive alloy.
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