What is the most commonly used substance in fluorescent tubes?

1.	What is the most commonly used substance in fluorescent tubes?
Answer» <html><body><p> <a href="https://interviewquestions.tuteehub.com/tag/mercury-558950" style="font-weight:bold;" target="_blank" title="Click to know more about MERCURY">MERCURY</a> <a href="https://interviewquestions.tuteehub.com/tag/vapour-1442886" style="font-weight:bold;" target="_blank" title="Click to know more about VAPOUR">VAPOUR</a> and argon</p><br/><br/><p>Mercury vapour and argon are the most commonly <a href="https://interviewquestions.tuteehub.com/tag/used-2318798" style="font-weight:bold;" target="_blank" title="Click to know more about USED">USED</a> substance in fluorescent <a href="https://interviewquestions.tuteehub.com/tag/tubes-1428682" style="font-weight:bold;" target="_blank" title="Click to know more about TUBES">TUBES</a>.</p></body></html>

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