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Question

A negative catalyst, like iron, decreases the rate of the reaction.


A

True

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B

False

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Solution

The correct option is B

False


A catalyst is a substance which alters the rate of the reaction without themselves undergoing a chemical change. There are two types of catalysts.

(i) Positive catalyst- A substance which increases the rate of a reaction. Example: Manganese dioxide, iron, and vanadium pentoxide.

(ii) Negative catalyst- A substance which decreases the rate of a reaction. Example: Phosphoric acid.

Iron is a positive catalyst. Therefore, the given statement is false.


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