WAEC Chemistry 2011 Objective — Question 48
Question 48 of 50 from the West African Examinations Council (WAEC) Chemistry 2011 Objective paper, with the correct answer and a full explanation.
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Which of the following processes does not involve the use of limestone?
- A. A. Extraction of iron in the blast furnace
- B. B. Manufacture of tetraoxosulphate (VI) acid by Contact processCorrect
- C. C. Production of washing soda by Solvay process
- D. D. Production of cement
Explanation
The manufacture of H2SO4 by the Contact process does not require limestone at all; it requires sulphur, oxygen, pure H2SO4, water and V2O5 as catalyst.
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