Q. The most commonly used substances in fluorescent tubes are

  • (A) sodium vapour and neon
  • (B) sodium oxide and argon
  • (C) mercuric oxide and neon
  • (D) mercury vapour and argon
✅ Correct Answer: (D) mercury vapour and argon

Published by Mr. Dubey ⭐ 104.94K Points at 10-Nov-2022 10:39 am in Chemistry

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