Single Answer MCQ
Q-00002481
Explain the role of catalysts in chemical reactions.
1
Catalysts increase the activation energy of a reaction.
2
Catalysts decrease the rate of a reaction.
3
Catalysts are consumed in a reaction.
4
Catalysts lower the activation energy of a reaction.
Answer and Solution
Answer
D. Catalysts lower the activation energy of a reaction.
Solution:
Catalysts are substances that speed up chemical reactions by lowering the activation energy required for the reaction to occur. They remain unchanged at the end of the reaction.
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