Egg sinks in soft water, but floats in concentrated salt solution because

The egg sinks in soft water but floats in concentrated salt solution because the density of the salt solution is greater than the density of the egg, denoted by option [C]. In a concentrated salt solution, the water molecules are displaced by salt ions, increasing the density of the solution. Consequently, the buoyant force exerted on the egg by the denser salt solution surpasses its weight, causing it to float. Conversely, in soft water, the density is lower, resulting in a weaker buoyant force compared to the weight of the egg, causing it to sink. This phenomenon exemplifies Archimedes’ principle, which states that the buoyant force acting on an object immersed in a fluid is equal to the weight of the fluid displaced by the object. Thus, the egg’s buoyancy or sinking behavior is determined by the relative densities of the egg and the surrounding fluid, with a denser fluid providing greater buoyancy, leading to the egg’s floating in concentrated salt solution and sinking in soft water.