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All of the following favour the membrane cell over the diaphragm cell EXCEPT

  • A.no asbestos handling
  • B.tolerance of impurities in the brine
  • C.higher caustic purity
  • D.lower electrical energy consumption

Answer: B

Correct answer: tolerance of impurities in the brine

Impurity tolerance is the one respect in which the diaphragm cell is the better of the two: the membrane demands far purer brine, as this topic’s earlier items establish. The other three are all genuine membrane advantages - no asbestos to handle, caustic pure enough to need no salt removal, and the lowest energy consumption of the routes.

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