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Standard XII
Chemistry
Effect of Catalyst
State if the ...
Question
State if the following is physical property of a substance.
Manganese dioxide, a catalyst which alters the rate of a chemical reaction is black in colour.
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Solution
Chemical property
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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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what is catalyst? why it alters the rate of chemical reaction.
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