Discussion
Assertion (A): Paper machines remove as much water as possible before the dryer section.
Reason (R): Evaporation is far more expensive per tonne of water than drainage or pressing.
Answer: B
Both are true and the reason gives the economics: a small gain in press dryness translates into a large saving in steam, which is why press design receives so much attention. Shoe presses were developed for exactly this gain.
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