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The rate of reaction is rapid for which of the following reactions?

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The rate of reaction is rapid for which of the following reactions?

(a) Cellular reactions

(b) Reactions in coal furnaces

(c) Reactions in rocket engines

(d) Gas reactions in porous catalysts

The question was asked during an online exam.

My query is from Reaction Rates topic in division Basic Concepts of Chemical Reaction Engineering

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The correct answer is (c) Reactions in rocket engines

Easy explanation: The rate of reaction in rocket engines is in the range 10^5-10^8. The order of decrease in rates is, Reactions in rocket engines > Reactions in coal furnaces > Gas reactions in porous catalysts > Cellular reactions.

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