Viscosity of a polymer solution or melt
A. Decreases with increase in molecular weight
B. Decreases with increase in temperature
C. Increases with increase in temperature
D. Does not vary with temperature rise
Answer: Option C
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option B must be correct...viscosity of a liquid solution decreases with increase in temperature due to decrease in molecular attraction force..
I think option B is correct, Viscosity decreases with increasing temperature
the viscosity of polymer melt decreases with increasing temperature, so the flow becomes easier when the temperature is increased. option B is correct.