Angle of Contact

If the temperature decrease, then the contact angle will ____.

With the rise in temperature, cohesive force will ____.

In a capillary rise experiment, the water level rises to a height of $5 \mathrm{cm}$. If the same capillary tube is placed in water such that only $3 \mathrm{cm}$ of the tube projects outside the water level, then

A liquid does not wet the solid surface, if the angle of contact is:

The angle between the tangent to the liquid surface at the point of contact and the solid surface inside the liquid is called?

The grease deposited on a glass plate can be easily removed by cleaning the glass with hot water containing detergent powder, because the detergent powder :-

A mosquito with 8 legs stands on water surface and each leg makes depression of radius $a$. If the surface tension and angle of contact are $T$ and zero respectively then the weight of mosquito is -

Angle of contact of a liquid with a solid depend on

Angle of contact of a liquid with a surface is ${95}^o$ . If a capillary of the same material as that of the surface is immersed in the same liquid, the liquid will

A mercury pallet is trapped between two horizontal glass plates having small space between them. The shape of mercury pallet is best described by -

If a liquid does not wet glass, its angle of contact is:

A liquid is filled in the hemispherical container of radius $\text{'}R\text{'}$ upto height $\text{'}R/2\text{'}.$ Liquid surface is horizontal everywhere. Angle of contact for the given pair is equal to-

The angle of contact of a liquid with a solid, if liquid does not wet the solid surface is:

A liquid has surface tension $T \mathrm{dyne}-{\mathrm{cm}}^{-1}$.A drop of this liquid of volume $0.09 {\mathrm{cm}}^3$ is placed on the surface of a glass slide. Then another glass slide is placed on it in such a way that the liquid forms a thin layer of area $30 {\mathrm{cm}}^2$ between the surfaces of the two slides. To separate the slides, a force of $16\times {10}^5 \mathrm{dyne}$ has to be applied normal to the surfaces. Find the value of $T$

Considering the angle of contact, choose the incorrect statement:

In a capillary rise experiment, the water level rises to a height of $5 \mathrm{cm}$. If the same capillary tube is placed in water such that only $3 \mathrm{cm}$ of the tube projects outside the water level, then

What could be the angle of contact, If a liquid does not wet a solid surface?

In gravity free space, the correct shape of water drop enclosed between two glass plates will be-

In the glass capillary tube, the shape of the surface of the liquid depends upon

There is a circular hole of diameter $\mathrm{d}=140 \mu \mathrm{m}$ at the bottom of a vessel containing mercury. The minimum height of mercury layer so that the mercury will not flow out of this hole is $\left(\mathrm{Surface} \mathrm{tension}, \mathrm{\sigma }=490\times {10}^{-3} {\mathrm{Nm}}^{-1}\right)$