NURSING EXAM QUESTIONS
PHARMACEUTICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Plastic flow is
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Shear thinning system
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Shear thickening system
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Both
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None
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Explanation:
Detailed explanation-1: -Ketchup is a prominent example of a shear thinning material, being viscous when at rest, but flows at speed when agitated by squeezing, shaking or striking the bottle. Whipped cream is also an example of a shear thinning material.
Detailed explanation-2: -Pseudo-plastic fluids are also referred to as shear-thinning fluids. The viscosity of these fluids will decrease with increasing shear rate. Therefore, for these fluids, the exponent Eq. 9.4 is n < 1.
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