In which vessel the fluid pressure is lower than water, mercury, gasoline, oil

We will assume that the atmospheric pressure is normal and the ambient temperature is 20 ° C.

The higher the density of the substance, the more pressure the liquid experiences on the bottom and walls of the vessel.

Let’s analyze the density of these substances.

The density of distilled water is 1000 kg / m3, and the density of seawater is 1010 kg / m3.

ρmercury = 13600 kg / m3.

ρ gasoline = 900 kg / m3.

ρoil ≈ 940 kg / m3.

Gasoline has the lowest density.

Answer: the pressure in the container with gasoline will be the smallest.