Capillarity and Capillary Action

Kerosene oil rises in a wick of lantern because of

In a capillary tube experiment, a vertical, $30 \mathrm{cm}$ long capillary tube is dipped in water. The water rises upto a height of $10 \mathrm{cm}$ due to capillary action. If this experiment is conducted in a freely falling elevator, the length of the water column becomes

A liquid rises to a height of $1.8\mathrm{cm}$ in a glass capillary "A" Another glass capillary 'B' having diameter $90\%$ of capillary "A" is immersed in the same liquid. The rise of liquid in capillary $\text{'}B\text{'}$ is 

A $20\mathrm{cm}$ long capillary tube is dipped vertically in water and the liquid rises upto $10\mathrm{cm}.$ If the entire system is kept in a freely falling platform, the length of water column in the tube will be 

In a capillary tube experiment, a vertical $30\mathrm{cm}$ long capillary tube is dipped in water. The water rises up to a height of $10\mathrm{cm}$ due to capillary action. If this experiment is conducted in a freely falling elevator, the length of the water column becomes 

In a capillary tube of radius $\text{'}\mathrm{R}\text{'}$, a straight thin metal wire of radius 'r' $(\mathrm{R}>\mathrm{r})$ is inserted symmetrically and one end of the combination is dipped vertically in water such that the lower end of the combination is at same level. The rise of water in the capillary tube is $[\mathrm{T}=$surface tension of water, $\rho =$density of water, $\mathrm{g}=$gravitational acceleration $]$

When a liquid rises inside a capillary tube, the weight of the liquid in the tube is supported

When the temperature is increased the angle of contact of a liquid _____.

Water rises to a height of $2\mathrm{cm}$ in a capillary tube. If the tube is tilted $60°$ from the vertical, water will rise in the tube to a length

A false statement is:

If a liquid does not wet the material of a capillary tube; then the liquid in it

When two capillary tubes of different diameters are dipped vertically in a liquid, the rise of the liquid in the capillary tube

The height to which a liquid will rise in a capillary tube is

Kerosene rises in the wicks of a stove due to the property of

Agricultural farm is ploughed because

The tip of the nib of a fountain pen is cut, so that

If a liquid does not rise or fall in a capillary tube, then its angle of contact is

If water rises to a height of h for a capillary tube with radius r, upto what height will water rise in a similar capillary tube with radius as r/2?

Assuming the xylem tissues, through which water rises from root to the branches in a tree, to be of uniform cross-section, find the maximum radius of xylem tube in a $10 \mathrm{m}$high coconut tree, so that water can rise to the top. (Surface tension of water$=0.1\mathrm{ }\mathrm{N} {\mathrm{m}}^{-1}$, angle of contact of water with xylem tube$=60°$)

Two parallel glass plates are dipped partly in the liquid of density $d$, keeping them vertical. If the distance between the plates is $x$, surface tension for liquid is $T$and the angle of contact is $\theta$,  then the rise of liquid between the plates, due to capillary, will be