Which of the following is not a composition of Nernst glower or Nernst filament?
A. Oxides of Zirconium
B. Oxides of Barium
C. Oxides of Yitrium
D. Oxides of Thorium
Answer:B
Which of the following is not a composition of Nernst glower or Nernst filament?
A. Oxides of Zirconium B. Oxides of Barium C. Oxides of Yitrium D. Oxides of Thorium
Explanation: Oxides of Barium is not present in Nernst glower. They are constructed by fusing oxides of Zirconium, yitrium and thorium.