Question

3. Measurement of particle size in pharmaceutical aerosol is by

(P) Cascade impactor (Q) Light scatter decay (R) K-F method (S) IR DR

A. Q. R

B. R. S

C. P. S

D. P. Q​

Answer 1

Answer:

lessar diffraction

plz make my ans as brainliest

Answer 2

Measurement of particle size in pharmaceutical aerosol is by Light scatter decay method(Q) and Cascade impactor(P). (Option D)

• A cascade impactor uses aerosol to measure the reach range of a particle as it passes through an aperture. Cascade impactors are strictly measuring devices. The impactor may be used to determine the particle size of the disseminated material as well as the range of substances pushed through an aperture by aerosol. A cascade impactor takes samples in a graded fashion. That enables the user to determine the particle sizes of the material as they are spread from the propellant aerosol source.
• DLS is a physics method for estimating the size distribution profile of small particles suspended in solution or polymers in solution. The intensity or photon auto-correlation function is frequently used in DLS to investigate temporal variations.