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Question

Assertion :The viscosity of water is less than blood. Reason: The viscosity of liquids decreases with increase in temperature.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

Whole blood has a much higher viscosity than water, as blood is thicker than water. Unlike the water, blood is non-Newtonian because its viscosity increases at low flow velocities. Blood is more viscous than water.

Also, the viscosity of the liquid decreases with a rise in temperature whereas it increases for the gases.

But the given reason is not appropriate for the assertion.

So, option B is correct.


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