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Assertion (A): Urea plants are almost always built alongside ammonia plants.
Reason (R): The ammonia plant supplies both the ammonia and the carbon dioxide that urea requires.

  • A.Both A and R are true, but R is not the correct explanation of A
  • B.A is true but R is false
  • C.A is false but R is true
  • D.Both A and R are true, and R is the correct explanation of A

Answer: D

Both are true and the reason gives the integration: the reformer produces carbon dioxide that would otherwise be vented, so the two plants together use both streams that neither could use alone. Site integration is the rule in this industry.

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