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Mr. Dubey • 52.77K Points
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Q. 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
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Explanation by: Mr. Dubey 
 oxides of barium is not present in nernst glower. they are constructed by fusing oxides of zirconium, yitrium and thorium.

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