Home PYQs UPPSC UPPSC MCQs Prelims 2006 (GS Paper I)

Question

The most commonly used substance in fluorescent tubes are

  1. sodium oxide and argon
  2. sodium vapour and neon
  3. mercury vapour and argon
  4. mercuric oxide and neon

Answer:

Option C: mercury vapour and argon

Detailed Solution:

The correct answer is “mercury vapour and argon”.

The most commonly used substance in fluorescent tubes is mercury vapor and argon.