Viscosity

Q. For a gas at 273 K and 20 atm its molar volume is 20 percent greater than that for an ideal gas under similar conditions is the compressibility factor greater than or less than 1

Q.

The viscosity of liquids ________ with increase in temperature

Q.

On heating a liquid , its viscosity ________

1. decreases

2. increases

3. first increases and then decreases

4. first decreases and then increases

Q.

The reciprocal of viscosity is called

1. surface tension

2. frictional resistance

3. fluidity

4. none of these

Q. 1mol of PCI(g) is present in 1 L of container. Ivapour density of equilibrium mixture is 69.5 thencalculate the equilibriium constant (Kc)Reaction PCI (g) PCI, (g)+Cl, (g)(1) 1, 5(2) M(3) 0.5(4) 0.25

Q. The given graph represent the variation of z compressibility factor z=pv/nRT versis p fpr three real gases A, B, C identify only incorrect statement

Q. 54. Dead sea is the deepest hypersaline lake in the world. If it contains 117 g NACL and 285 g MgCl2 per 100 L Of water . Then molarity of cl- in sea water is?

Q.

Viscosity

1. Is measured in poise

2. Has the dimensions of kgms^-1

3. Has the dimensions of kgm²s^-1

4. None of the above

Q.

Greater the viscosity,

1. More quickly the liquid flows

2. More quickly the liquid expands

3. More slowly the liquid expands

4. More slowly the liquid flows

Q. a container contains cl2 gas at cons†an t temperature and pressure which diasociated according to following reaction . cl2= 2cl. and xenon gas kept in another container in the identical conditions with the mixture . if both mixture and xenon gas are effuses from the identixal holes in the identical conditions . if the mixture effuses 1.41 tmes faster than xenon . find out percentage dissociation of cl2.

Q. With the increasing molecular weight of a liquid, the viscosity

1. Decreases
2. Increases
3. Remain constant
4. All are wrong
   

Q.

With increasing molecular mass of a liquid, the viscocity:

1. decreases

2. increases

3. no effect

4. all are wrong

Q.

The reciprocal of viscosity is called

1. surface tension

2. frictional resistance

3. fluidity

4. none of these