The alternative method using laser does not analyse vapours by which of the following methods?
A. Mass spectrometer
B. Optical emission
C. Absorption photometry
D. X-ray photometry
Answer:D
The alternative method using laser does not analyse vapours by which of the following methods?
A. Mass spectrometer B. Optical emission C. Absorption photometry D. X-ray photometry
Explanation: The alternative method using laser does not analyse vapours by X-ray photometry. This method is gaining popularity.