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Option-C: They react mainly by substitution.
Explanation:
Alkene doesn't give substitution reactions because they are non polar in nature. The double bond in alkene is responsible for Electrophillic Addition reactions as it electron rich and nucleophilic in nature. Reaction of Alkene is given below,</span>
This is based on your personal opinion lol but ig you can say public speaking
There are two carbon atoms in every ethanol molecule, so there would be 60 carbons all together.
I hope this helped you!
Its described as a Straight Branch, hope this helps :)