Which of the following is the most adverse factor challenging the choice of mercury electrolytic cell process for the production of caustic soda ?
Correct answer: C. Pollution of water stream by mercury
- A. High cost of mercury
- B. High specific gravity of mercury
- C. Pollution of water stream by mercury
- D. Non-availability of high purity mercury
Explanation
Mercury leakage can contaminate wastewater and create serious environmental and health hazards, making pollution the major disadvantage of the mercury-cell process. The high cost of mercury is important economically, but mercury pollution is the more adverse environmental concern.
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