Question

Which of the following is a characteristic of nanoparticles?

(a) Free flowing powders

(b) Aqueous solutions

(c) Control drug release by partitioning the drug from the oil

(d) Size range 10-100 nm

This question was posed to me in an online quiz.

Enquiry is from Biopharmaceuticals in chapter Biopharmaceuticals of Drug Biotechnology

Answer 1

The correct option is (d) Size range 10-100 nm

For explanation I would say: Nanoparticles are called as nanospheres when the drug is in the polymer matrix and nanocapsules when they are encapsulated. They differ from microspheres to nano size with size 10-1000nm. The polymers used are biodegradable ones.