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Question

Which of the following is not true for a promoter?

A
a substance added to a solid catalyst
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B
added to improve catalyst's performance
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C
A promoter never exhibits catalytic effect.
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D
Some promoters interact with active components of catalysts
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Solution

The correct option is C A promoter never exhibits catalytic effect.
Promoter, a substance added to a solid catalyst to improve its performance in a chemical reaction. By itself, the promoter has little or no catalytic effect. Some promoters interact with active components of catalysts and thereby alter their chemical effect on the catalyzed substance.

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