Three liquids have the same surface tension and densities ρ1, ρ2, and ρ3 (ρ1 > ρ2 > ρ3). In three identical capillaries, the rise of liquid is the same. The corresponding angles of contact θ1, θ2, and θ3 are related as:

When a bottle of perfume is kept open in a corner of a room, its fragrance is soon felt in all parts of the room. This occurs due to which phenomenon?

The quantity of matter contained in a substance is termed as:

What is the ability of a material, particularly a metal, to resist surface wear, scratching, and abrasion called?