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Unit of surface tension is...

Unit of surface tension is

A

`Nm^2`

B

`Nm^-2`

C

`Nm^-1`

D

Nm

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The correct Answer is:
D
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Which of the following in not the unit of surface tension ?

Which of the following in not the unit of surface tension ?

Surface tension of a liquid is a molecular phenomenon of liquids involving the force of cohesion along the liquid molecules. It is scalar quantity and is numberically equal to the surface energy. Numerically, it is proved that the potential soluble salts and surface active substance. Sparingly soluble salts and surface active substances decrease the surface tension of the liquid. However, the fairly soluble solutes increase the surface tension of the liquid. Surface tension of a liquid is independent of surface area but it depends on the intermolecular forces and the temperature. Which among the following is not the unit of surface tension ?

An annular disc of radius r_(1 )= 10 cm and r_(2) = 5 cm is placed on a water surface. Find the surface tension force on the disc if we want to pull it from water surface. Take coefficient of surface tension as sigma= 7 xx10^(-3) N//m, g = 10 ms^(-12) .

An annular disc of radius r_(1 )= 10 cm and r_(2) = 5 cm is placed on a water surface. Find the surface tension force on the disc if we want to pull it from water surface. Take coefficient of surface tension as sigma= 72 dyne//cm, g = 10 ms^(-2) .

Which are not suitable units for surface tension in S.I. system

The dimensions of surface tension are

Statement I: Surface tension has the same units as fore gradient. Statement II: Surface tension is the force gradient along the surface of liquid.

The dimensional formula for surface tension is

Name the force responsible for surface tension in liquids.

AAKASH INSTITUTE ENGLISH-TEST 3-EXERCISE
  1. Unit of surface tension is

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  2. In which of the following molecules, intermolecular attraction is pure...

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  3. Which one of the following acids has highest heat of neutralization wi...

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  4. Which among the following is an intensive property?

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  5. The amount of heat required to raise the temperature of 75 kg of ice a...

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  6. A chemical reaction takes place in a vessel of cross-sectional area 15...

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  7. Five moles of an ideal gas undergoes reversible expansion from 1 L to ...

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  8. Enthalpy of which of the following reactions does not represent the st...

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  9. One mole of an ideal gas undergoes change of state from (4 L, 3 atm) t...

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  10. The difference between heat of reaction at constant pressure and at co...

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  11. According to kinetic theory of gases, the incorrect statement is

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  12. The most probable speed of an ideal gas at constant pressure varies wi...

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  13. At high pressure, the compressibility factor for one mole of van der w...

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  14. The correct thermodynamic conditions for the spontaneous reaction at a...

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  15. A closed cylinder contains 40 g of SO2, and 4 g of helium gas at 375 K...

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  16. In the electrolysis of H2O , 11.2 liters of H2 was liberated at cathod...

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  17. Which among the following will boil at highest temperature?

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  18. If 200 ml of 0.1 MH2SO4 solution is mixed with 200 ml of 0.15 M NaOH s...

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  19. Unit of surface tension is

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  20. For which of the following processes, entropy change is negative?

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  21. A liquid is in equilibrium with its vapour at a certain temperature. I...

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