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Which of the following is cationic detergent?

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Which of the following is cationic detergent?

(a) Sodium dodecyl sulphate (SDS)

(b) Cetyl triethyl ammonium bromide

(c) Sodium lauryl sulphate (SLS)

(d) Triton-X-100

The question was posed to me in class test.

The above asked question is from Extraction of Enzymes by Chemical Methods topic in chapter Enzyme Extraction and Isolation of Enzyme Technology

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Correct answer is (b) Cetyl triethyl ammonium bromide

To explain I would say: In detergent treatment, 2 types of detergent are used namely, ionic and non-ionic. Ionic also has 2 types: cationic and anionic detergents. SDS and SLS and anionic detergents as compared to triton-X-100 which is a non-ionic detergent. Cetyl trimethyl ammonium bromide is a cationic detergent.

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