Explain why
A drop of liquid under no external forces is always spherical in shape.

Why is a big drop of liquid oblate?

Why drops and bubbles are spherical in shape?

Explain why gravitational force is called a centre force ?

Explain why Surface tension of a liquid is independent of the area of the surface.

Explain why meiosis and gametogenesis are always interlinked?

Which of the following property of water can be used to explain the spherical shape of rain droplets ?

Explain why objects moving in fluids must have special shapes.

Explain why Water on a clean glass surface tends to spread out while mercury on the same surface tends to form drops. (Put differently ,water wets glass while mercury does not).