The process of adding hydrogen to liquid unsaturated fats to produce margarine and shortening is an example of:

Question

BlackTom AI · Accepted Answer

To understand this question, we start by identifying what process is described: adding hydrogen to liquid unsaturated fats to produce margarine and shortening.
Option 1: Oxygenation. This would involve introducing oxygen into a molecule, which is not what is happening when hydrogen is added to fats. Therefore, oxygenation does not describe the process.
Option 2: Hydrogenation. Hydrogenation specifically refers to the addition of hydrogen to unsaturated carbon–carbon bonds in fats, converting some double bonds to single bonds and turning liquid oils into more solid fats like margarine and shortening. This aligns exactly with the described process.
Option 3: Dehydration. Dehydration means removing water (H2O) from a molecule. Since the process described adds hydrogen rather than removing water, dehydration is incorrect.
Option 4: Polyunsaturation. Polyunsaturation describes a fat that has many double bonds (multiple unsaturations) in its fatty acid chains. The term does not describe the addition of hydrogen to saturate double bonds, so this option does not fit the process described.
Overall, the reasoning centers on matching the described chemical change (adding hydrogen to unsaturated fats, increasing saturation) with the appropriate term, while recognizing why the other terms do not fit the described chemical transformation.

The process of adding hydrogen to liquid unsaturated fats to produce margarine and shortening is an example of:单项选择题

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