Same chapter3 marksDifficulty: Medium
What is an emulsion? Name the two types with an example of each.
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3 marksDifficulty: Medium
What is meant by the promoter and the poison of a catalyst? Give one example of each.
Original Khojo Papers practice question — not from a past board paper.
Answer
A promoter is a substance that increases the activity of a catalyst without being a catalyst itself, as molybdenum does for iron in the Haber process. A poison is a substance that destroys the activity of a catalyst, as carbon monoxide does for the iron catalyst, or sulphur for platinum.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
A poison usually acts by adsorbing on the active sites of the catalyst.
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