When a capillary tube is placed in mercury, we see that__
the level of mercury falls
the level of mercury rises rapidly.
the level of mercury first rises then falls
the level of mercury rises slowly
With the increase in temperature, the level of water
decreases in a capillary tube.
increases rapidly in a capillary tube.
first increases and then decreases in a capillary tube.
increases slowly in a capillary tube.
The water from roots of plant reaches to the stem and other parts of the plant through
None of these
Which one is not an example of Capillary action?
Ploughing the field
Absorption of ink in a blotting paper
Floating of wood on the surface of water
Rise of oil in the wick of a lamp
The tendency of a liquid in a tube or absorbent material to rise or fall as a result of surface tension is called
None of these
- Silver and water; mercury and glass
- Silver and chromium; water and chromium
- Pure water and glass; glass and alcohol
- Water and glass; glass and mercury
Capillary action is caused by the combination of cohesive forces of the liquid and the adhesive forces between the liquid and tube material.
When the temperature is increased the angle of contact of a liquid
First increases and then decreases
Remains the same
It is relatively easy to write on blotting paper or newspaper with an ink pen because of
Because of viscosity
Because of inertia
Because of friction
Because of capillarity