57 Dairy Microbiology- ICAR JRF/SRF 2024 MCQ (Single Correct) +4 −1 Ultrasonic cleaners used for membrane cleaning operate at a frequency of A 1-5 kHz Correct Incorrect B 20-40 KHz Correct Incorrect C 1000-2000 kHz Correct Incorrect D 1-5Hz Correct Incorrect Check Answer EXPLANATION Dairy Biofilms & Surface Adhesion: EPS Matrix, Quorum Sensing & CIP Sanitation Resistance Ultrasonic Membrane Cleaning Frequency:Acoustic Cavitation Mechanics:Power ultrasound de-fouls filtration membranes (UF/RO) by inducing acoustic cavitation—microscopic bubble formation and violent collapse producing localized shock waves and high-velocity microjets that dislodge foulant foul cakes.Operates in the low-frequency power ultrasound regime of $20 - 40\text{ kHz}$.Conclusion: 20-40 KHz (Option 2). Correct option: (2) 20-40 KHz Explanation not matching this question? क्या व्याख्या इस प्रश्न से मेल नहीं खा रही? Report Mismatch त्रुटि बताएं Prev Next