Helical screw agitator is used for________________?
Correct answer: A. Mixing highly viscous pastes
- A. Mixing highly viscous pastes
- B. Blending immiscible liquids
- C. Mixing liquids at very high temperature (> 250 °C)
- D. None of these
Explanation
A helical screw agitator produces strong axial movement and is suitable for highly viscous materials such as pastes. Immiscible-liquid blending usually requires a different impeller and high-temperature service is not its defining application.
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