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b. How can the rate of the chemical reaction, namely, decomposition of hydrogen peroxide be increased?

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b. How can the rate of the chemical reaction, namely, decomposition of hydrogen peroxide be increased?

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The rate of chemical reaction can be increased by using catalysts. 

In hydrogen peroxide decomposition, (Manganese dioxide powder)MnO2​ is used as a catalyst.

The substance in whose presence the rate of a chemical reaction changes, without causing any chemical change to it, is called a catalyst

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