Question

__________________ is an example of anionic detergent.

(a) Tween

(b) Cetyl triethyl ammonium bromide

(c) Sodium dodecyl sulphate (SDS)

(d) Triton-X-100

The question was posed to me in a job interview.

My doubt stems from Extraction of Enzymes by Chemical Methods in portion Enzyme Extraction and Isolation of Enzyme Technology

Answer 1

The correct answer is (c) Sodium dodecyl sulphate (SDS)

To explain I would say: SDS is an anionic detergent as compared to tween and triton-X-100 which are examples of non-ionic detergents. Cetyl triethyl ammonium bromide is an example for cationic detergents. Sodium lauryl sulphate is also an example for anionic detergents.