Question

$\small\bold{What \: are \: the \: symptoms \: of \: a \: blocked \: artery \: ?}$
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Answer 1

Sweling is the main symptom .

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Answer 2

Kellner–Solvay cell consists of a rectangular trough, at the base of which there is a thin layer of mercury which flows from one end to the other acting as cathode. A concentrated brine solution flows slowly through the cell in the same direction as the mercury and is maintaind at a constant level.