. . . . . . . . is a phenomenon of assuming frequencies more than 20 kHz which is above the human audibility.

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Q. . . . . . . . . is a phenomenon of assuming frequencies more than 20 kHz which is above the human audibility.

(A) Homogenization
(B) Ultrasonics
(C) Alkali treatment
(D) Freezing

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✅ Correct Answer: (B) Ultrasonics

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