Substances whose particles pass through filters but cannot pass through semipermeable membranes are called?
Answer:
Colloids
ttp://en.wikipedia.org/wiki/Co...
Colloids
they are colloidal in nature... hence called colloids... these have a size of 10^-6 to 10^-9m... normal filter size is 10^-10m... but for semipermeable membranes it is less than 10^-5m... hence they can pass or filter thro ordinary filters but cant pass thro semipermeable membranes... its all due to their molecular sizes only...
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