Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like_________________?
Correct answer: B. All A, B. and C.
- A. High cost
- B. All A, B. and C.
- C. Easy poisoning tendency
- D. Fragile nature
Explanation
Platinum was effective in the contact process but was costly, mechanically fragile, and readily poisoned by impurities such as arsenic compounds. Therefore all three listed drawbacks apply.
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