Question

Non-dispersive infrared analyzer depends on the characteristic absorption of the CO molecule at a wavelength of __________

(a) 5.4 µm

(b) 4.6 µm

(c) 8.9 µm

(d) 10.8 µm

I got this question during an internship interview.

My doubt is from Estimation of Carbon Monoxide topic in division Pollution Monitoring Instruments of Analytical Instrumentation

Answer 1

The correct choice is (b) 4.6 µm

The explanation is: Non-dispersive infrared analyzer depends on the characteristic absorption of the CO molecule at a wavelength of 4.6 µm.