is a substance added to improve the performance of a solid catalyst in a chemical reaction.

Collector

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Promoter

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Stabiliser

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Solution

The correct option is B Promoter
Catalysts are substances that increase the rate of a chemical reaction without itself getting consumed.

Promoters are substances added to improve the performance of a solid catalysts in a chemical reaction.

For example: Chromic oxide is used as a promoter along with the catalyst zinc oxide during the synthesis of methyl alcohol.

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When the solution of substance X is added to a solution of potassium iodide, then a yellow solid separates out from the solution.

(a) What do you think substance X is likely to be ?

(b) Name the substance which the yellow solid consists of.

(c) Which characteristic of chemical reactions is illustrated by this example ?
(d) Write a balance chemical equation for the reaction which takes place. Mention the physical states of all the reactants adn products involved in the chemical equatio.

Q. Which of the following is true for a substance that is oxidized in a chemical reaction–oxygen is added to it, hydrogen is removed from it, or both are true?

Q. is a substance added to improve the performance of a solid catalyst in a chemical reaction.

Q. Assertion :Catalyst is a substance which takes part in a chemical reaction, undergoes chemical change and alters the rate of a reaction Reason: Catalyst is a substance which does not take part in a chemical reaction, but changes the rate of reaction

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