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Question

Thermal decomposition of alkanes in the absence of air is called:

A
Cracking
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B
Oxidation
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C
Cumbustion
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D
Hydrogenation
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Solution

The correct option is A Cracking
The Thermal decomposition of alkanes in the absence of air is called [Cracking.
Explanation:
The process of decomposition of a compound by heat in the absence of air is known as pyrolysis. When this reaction takes place in alkanes, it is referred to as cracking.
Hence, the correct option is A.

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