it has low vapour pressure

it is clearly visible

it has low surface tension

it can provide longer column due to low density

25 kN/m2

245 kN/m2

2500 kN/m2

2.5kN/m2

dissolved air

dissolved salt

suspended matter

all of the above

specific weight

specific mass

specific gravity

specific density

surface tension

viscosity

friction

cohesion