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Question: Answered & Verified by Expert
The function of $\mathrm{Fe}(\mathrm{OH})_{3}$ in the contact process is
Chemistryd and f Block ElementsKCETKCET 2009
Options:
  • A to remove arsenic impurity
  • B to detect colloidal impurity
  • C to remove moisture
  • D to remove dust particles
Solution:
2501 Upvotes Verified Answer
The correct answer is: to remove arsenic impurity
The function of $\mathrm{Fe}(\mathrm{OH})_{3}$ in the contact process is to remove arsenic impurity. $\mathrm{Fe}(\mathrm{OH})_{3}$ is a positive sol, hence it removes arsenic impurity which is a negative sol.

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