A) positive catalyst
B) negative catalyst
C) autocatalyst
D) none of these
Correct Answer: B
Solution :
Key Idea: (a) Positive catalyst increase the rate of reaction. (b) Negative catalyst decrease the rate of reaction. (c) Auto catalyst are formed during reaction. \[\because \] Addition of 1% alcohol to chloroform decreases the rate of decomposition of \[CHC{{l}_{3}}.\] \[\therefore \]1% alcohol acts as negative catalyst in this reaction.
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