Which one of the following techniques can be used for determining the level of cadmium in soil?
A. UV - Visible spectrophotometer
B. Atomic absorption spectrophotometer
C. XRD (X-ray diffraction)
D. IR spectrometer
Answer: Option B
A. UV - Visible spectrophotometer
B. Atomic absorption spectrophotometer
C. XRD (X-ray diffraction)
D. IR spectrometer
Answer: Option B
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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