Surface Tension...

A drop of mercury of radius 2 mm is split into 8 identical droplets. Find the increase in surface energy. (Surface tension of mercury is 0.465 J/m²) 

If two soap bubbles of equal radii r coalesce then the radius of curvature of interface between two bubbles will be

The angle of contact between glass and mercury is

A mercury drop does not spread on a glass plate because the angle of contact between glass and mercury is

The value of contact angle for kerosene with a solid surface.

Nature of meniscus for liquid of 0⁰ angle of contact

A liquid wets a solid completely. The meniscus of the liquid in a sufficiently long tube is 

For which of the two pairs, the angle of contact is same

If soap bubbles of different radii are in communication with each other

The surface tension of the soap solution is 25×10⁻³ Nm⁻¹ . The excess pressure inside a soap bubble of diameter 1 cm is