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Question

Pyrolysis is a process of combustion in the absence of _________ .

A
nitrogen
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B
oxygen
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C
hydrogen
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D
carbon
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Solution

The correct option is B oxygen
Pyrolysis is defined as the process of chemically decomposing organic materials at elevated temperatures in the absence of oxygen. Since no oxygen is present, the organic material does not combust. Instead, the chemical compounds that make up the material decompose into combustible gases and charcoal.

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