Which of the following analyzers are used to measure trace amounts of nitrogen oxides in the stratosphere? Options: A . &nbspChemiluminescence B . &nbspCO laser method C . &nbspLaser opto-acoustic spectroscopy D . &nbspColorimetry

Which of the following analyzers are used to measure trace amounts of nitrogen o

Question

Which of the following analyzers are used to measure trace amounts of nitrogen oxides in the stratosphere?

Options:

A . Chemiluminescence

B . CO laser method

C . Laser opto-acoustic spectroscopy

D . Colorimetry

Answer: Option C
Answer: (c).Laser opto-acoustic spectroscopy

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