Discussion
Assertion (A): Reducing dead time is often more valuable than speeding up the reaction in a batch plant.
Reason (R): Charging, heating, cooling and cleaning can occupy more of the cycle than the reaction does.
Answer: C
Correct answer: Both A and R are true, and R is the correct explanation of A
Both are true and the reason gives the arithmetic. In many batch plants the reaction occupies a smaller share of the cycle than the operations around it, so halving the reaction time might gain a fifth of the cycle while shortening the heat-up or the cleaning could gain as much for less effort. The right question is always which part of the cycle is the longest, not which part is the most interesting.
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