Polymers are formed via dehydration reactions by molecules. Which of the following best describes a dehydration reaction? Assembling molecules in either carbonyl or carboxyl functional groups
Assembling molecules in either hydroxyl or carboxyl functional groups
Dissembling molecules in carboxyl functional groups
Dissembling molecules in hydroxyl functional groups

The correct answer is; "Assembling molecules in either hydroxyl or carboxyl functional groups"

Polymers are formed from monomers either by condensation or by addition of monomers.

A polymer is formed by the joining of one or more monomers. This can happen in either of the following ways;

Condensation polymerization involves the loss of a small molecule. When the molecule that is lost is water, we can call it dehydration. Loss of molecules does not occur in addition polymerization.

The two monomer molecules that join to yield the polymer by dehydration must have H and OH moieties in suitable positions for dehydration to occur. A typical example is assembling molecules in either hydroxyl or carboxyl functional groups.

For more about condensation polymerization, see

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