Question

The characteristic emission of which colour, when discharge takes place in a low pressure chamber containing gas sample, will indicate the presence of nitrogen while using photospectrometer?

(a) Purple

(b) Blue

(c) Pink

(d) Green

I have been asked this question in my homework.

I would like to ask this question from Method Based on Ionization of Gases topic in portion Industrial Gas Analysers of Analytical Instrumentation

Answer 1

Correct answer is (a) Purple

For explanation I would say: The characteristic emission of purple colour, when discharge takes place in a low pressure chamber containing gas sample, will indicate the presence of nitrogen while using photospectrometer. These are usually employed in medical applications.