Question

1what is catenation 2)in which industry ethanol is obtained as a byproduct

Answer 1

1.Catenation is the linkage of atoms of the same element into longer chains. Catenation occurs most readily in carbon, which forms covalent bonds with other carbon atoms to form longer chains and structures. This is the reason for the presence of the vast number of organic compounds in nature.
2. in sugar manufacturing industry.
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Answer 2

in simple words catenation is selflinking and catenation property of carbon is greater than any other element.

In sugar manufacturing industry ethanol is obtained as a byproduct