Two volumetric flasks: a 100 cm³ flask and a 250 cm³ flask, both containing a yellow liquid.
▲ Volumetric flasks of 100 cm3±0.20 cm3 and 250 cm3±0.30 cm3 at 20∘C . (Note millilitre 'ml' as marked is the same as cm3 , which is the correct SI unit). Which flask has the greater percentage uncertainty?