# Which of the following holds good for an elementary reaction as shown in the bellow figure ? with Answer - Chemical Engineering Mcqs | TestPrep

> Solved MCQ: Which of the following holds good for an elementary reaction as shown in the bellow figure ? Correct Answer: C. Three times the rate of disappearance of ‘X’ is equal to the rate of appearance of ‘Z’. Verified answer explanation for FPSC, PPSC, MDCAT, NTS, and CSS competitive exam preparation.

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# Which of the following holds good for an elementary reaction as shown in the bellow figure ?

Direct Answer & Quick Reference

The correct option is **C. Three times the rate of disappearance of ‘X’ is equal to the rate of appearance of ‘Z’**.

A. The rate of disappearance of ‘Y’ is equal to the rate of appearance of ‘Z’

B. The rate of disappearance of ‘Y’ is equal to the rate of disappearance of ‘X’

C. Three times the rate of disappearance of ‘X’ is equal to the rate of appearance of ‘Z’ **(Correct Answer)**

D. The rate of disappearance of ‘X’ is equal to the rate of appearance of ‘Z’

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Verified Key: C. Three times the rate of disappearance of ‘X’ is equal to the rate of appearance of ‘Z’
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Verified against official examination board answer keys and standard curriculum textbooks.

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