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Assertion (A): An adiabatic reactor for an exothermic reversible reaction is built as several beds with cooling between them.
Reason (R): The optimum temperature falls as conversion rises, and cooling between beds approximates that profile.

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

Answer: A

Both are true and the reason gives the design, and sulphuric acid converters and ammonia synthesis reactors are both built on exactly this principle. The profile falls as conversion rises. Each bed runs adiabatically between coolers.

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