Oxidation of the filament in a light bulb is prevented by...
Oxidation of the filament in a light bulb is prevented by the introduction of
hydrogen
oxygen
argon
mercury vapour
Correct answer is C
No explanation has been provided for this answer.
Light Emitting Diodes (LED) used in fancy electronic devices such as toys, emit ...
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The depolarising agent in a Leclanche cell is? ...
Which of the following is the exclusive property of a transverse wave? ...
Which of the following waves requires a material medium for its propagation? ...