Chemistry-(general)
NEET Chemistry (general) MCQ Question
Type: MCQ-diagram based-Hard-Class 12
Consider a diagram illustrating the laboratory preparation of dioxygen. The diagram shows a setup where potassium chlorate is being heated in the presence of manganese dioxide. What is the role of manganese dioxide in this reaction?
A
It acts as a catalyst to lower the activation energy.
B
It reacts with potassium chlorate to form dioxygen.
C
It absorbs moisture from the reaction mixture.
D
It is reduced to manganese metal during the reaction.
Correct Answer
Option A
Detailed Explanation
Manganese dioxide acts as a catalyst in the decomposition of potassium chlorate to produce dioxygen, helping to lower the activation energy required for the reaction.
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