Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Q: Diffraction is the phenomenon in which light and sound waves become circular at the point source of a barrier.

A: What is the phenomenon in which light and sound waves become circular at the point source of a barrier?
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Q: Sucrose is formed when a monomer of glucose and a monomer of fructose are joined in a dehydration reaction to form a glycosidic bond.

A: What is formed when a monomer of glucose and a monomer of fructose are joined in a dehydration reaction to form a glycosidic bond?
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Q: Trans fat is manufactured and added to foods to preserve freshness.

A:
What is manufactured and added to foods to preserve freshness?
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