Question

Which of the following is not true about Fourier Transform Infrared (FTIR) spectrometer?

(a) It is of non-dispersive type

(b) It is useful where repetitive analysis is required

(c) Size has been reduced over the years

(d) Size has increased over the years

I got this question in a job interview.

I would like to ask this question from Fourier Transform Infra-red Spectrometers topic in chapter Colorimetry and Spectrometry of Analytical Instrumentation

Answer 1

Correct option is (d) Size has increased over the years

The best I can explain: FTIR is of non-dispersive type of instruments and is used for repetitive analysis. Initially, it was bulky and the cost was high and hence, it was limited to a special application. Now, the size has been reduced.