Which of the following operations does not involve leaching ?
Correct answer: B. Removing nicotine from its water solution by kerosene
- A. Dissolving gold from ores
- B. Removing nicotine from its water solution by kerosene
- C. Dissolving sugar from the cells of the beet
- D. Dissolving pharmaceutical products from bark or roots
Explanation
Leaching removes a soluble constituent from a solid using a liquid solvent, as in ores, roots, and beet cells. Removing nicotine from its aqueous solution with kerosene is liquid-liquid extraction, not leaching.
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