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1. Viscosity of fluids decreases with rise in temperature , but of gases increases with increase in temperature ... PLEASE explain why is it so ?
2. We know that if the impurity is completely soluble then on mixing it in the liquid its surface tension increases . On mixing partial soluble impurities in the liquid , its surface tension decreases .. example is " mixning of detergents in water decreases surface tension of water . BUT WHY IS IT SO PLEASE EXPLAIN ?
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11 Answers
1if the impurity is completely soluble then on mixing it in the liquid its surface tension increases
.......... why ??
13the first Q is actually
Viscosity of liquids decreases with rise in temperature , but of gases increases with increase in temperature ... PLEASE explain why is it so ?
its a good Q i feel....[12]
1well then for liquids, rise in temperature dec the coeff of viscosity... so it dec.
but in gases, rise in temperature inc the KE of the molecules ... they collide more and hence create more obstacle...
cant thnk of a quantitatine explanation r8 now.. :(
13hey...the explanation for the liquids was...[3]....[3]
arre...rise in temperature dec the coeff of viscosity....why does it happen?????
13Copied.....from the book
Mechanics of fluids By Bernard Stanford Massey, John Ward-Smith
