Question

The total solid surface area of any particle is known as ___________

(a) Absolute surface area

(b) Effective surface area

(c) Total surface area

(d) Surface area

I got this question during an interview.

My doubt stems from Drugs Absorption in division Absorption of Drugs of Drug Biotechnology

Answer 1

Correct choice is (a) Absolute surface area

To explain: Particle size and surface area of a solid drug are inversely related to each other. Absolute surface area is the total area of the solid surface of any particle and an effective surface area is the area of the solid surface exposed to the dissolution medium. Smaller the drug particle greater the surface area.