In which type of chromatography four modes viz., absorption, partition, ion exchange and exclusion, are present?
A. HPLC
B. Liquid - liquid chromatography
C. Ion - exchange chromatography
D. Adsorption chromatography
Answer: Option A
A. HPLC
B. Liquid - liquid chromatography
C. Ion - exchange chromatography
D. Adsorption chromatography
Answer: Option A
Which concentration of ethanol (ethyl alcohol) is the most effective as a disinfectant?
A. 100%
B. 70%
C. 50%
D. 25%
Which of the following method works primarily by denaturing proteins?
A. Ultra filtration
B. Heat
C. UV radiation
D. None of the above
Dioxins and furans are two toxic gaseous pollutants which can be measured by
A. GC - MS
B. TLC
C. ICP - AES
D. AAS
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