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Question

Which of the following statements regarding a liquid is/are not correct?
  1. The SI unit of viscosity is pascal-second.
  2. 1 Pa-s = 10 poise.
  3. The viscosity of a liquid decreases with increase in temperature
  4. The viscosity of a liquid increases with increase in temperature

A
The viscosity of a liquid decreases with increase in temperature
B
1 Pa-s = 10 poise.
C
The SI unit of viscosity is pascal-second.
D
The viscosity of a liquid increases with increase in temperature
Solution
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The viscosity of liquid decreases with increase in temperature. As with increase in temperature, the liquid molecules move apart due to which less adhesion force is created. So, viscosity decreases.

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