Question

Which of the following equipment is based on the principle of Pohlman liquid whistle?

• A. Ultrasonifier
• B. Mechanical stirrer
• C. Silverson homogeniser
• D. Colloid mill

Answer 1

The Correct Option is A

The question asks which of the given equipment operates based on the principle of the Pohlman liquid whistle. Let's explore the given options to determine which one aligns with this principle.

1. Ultrasonifier: An ultrasonifier is a device that employs ultrasound waves to create cavitation, which is used for homogenizing, emulsifying, cleaning, and extracting processes. The principle of the Pohlman liquid whistle involves the use of high-frequency sound waves, similar to those used in ultrasound technology. Therefore, the ultrasonifier is based on this principle.
2. Mechanical Stirrer: This equipment is used to mix solutions, but it utilizes mechanical means to stir rather than sound waves. Thus, it does not operate on the principle of the Pohlman liquid whistle.
3. Silverson Homogeniser: A Silverson homogenizer uses high shear mixing to achieve homogeneity, which mainly involves mechanical force, not sound waves. Hence, it does not work based on the Pohlman liquid whistle principle.
4. Colloid Mill: This equipment is typically used to reduce particle size and mix liquids through shear force and friction, rather than utilizing sound waves. Therefore, it is unrelated to the Pohlman liquid whistle principle.

From the explanations above, it is clear that the ultrasonifier is the correct answer as it operates using principles that involve high-frequency sounds similar to those in the Pohlman liquid whistle.