Discussion
The catalyst used in fat hydrogenation is
Answer: B
Correct answer: finely divided nickel
Nickel on a support is the standard hydrogenation catalyst for edible oils: it is active enough at moderate temperature and pressure, cheap, and filterable from the finished oil. The selectivity is controlled through temperature, pressure and agitation, since the conditions determine both how far the hydrogenation goes and how much trans isomer is formed along the way.
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