Yes, it is.
Yes, mangoes are lighter than water. The density of mangoes is lower than the density of water, which means they will float in water.
Saturn is much lighter than water. It is a gas giant made primarily of hydrogen and helium, with a density lower than that of water.
a grain of sand
Yes, Frozen water is 9% Lighter than actual water .
depends if the plastic is heavier or lighter than water and if its hold air which is lighter than water
salted water
Oil is lighter than water due to it's lower specific gravity, specific gravity being the "density" of a fluid relative to water.
Yes, methanol is lighter than water. Methanol has a lower density compared to water, which means it will float on top of water.
Yes - Oil is lighter than water. Petrol, or gasoline, floats on water because it is lighter that water.
Yes, helium will float in water. Helium is lighter than air, so it will also be lighter than water and rise to the surface when submerged in water.
Water mixed with alcohol is lighter than fresh water because alcohol is less dense than water. When alcohol is added to water, the overall density of the mixture decreases due to the lower density of alcohol, making the mixture lighter than fresh water.
They are not really lighter, they only seem lighter. Objects weigh the same in water as in air, but in the water, there is an additional force, of the water pushing the object up.