Answer:
C is correct
Explanation:
to show oxygen and nitrogen component in the air using a bell jar.
Apparatus - a trough, a bell jar, a cork, a crucible, and a piece of white phosphorus.
Procedure - A trough is filled with and a bell jar is labeled into 5 equal parts.
A crucible with white phosphorus placed on a cork is floating in the water.
The level of water inside the jar and outside the jar is adjusted to one level
The phosphorus is ignited by means of an ignited wire.
Observation - The phosphorus burns in the air with oxygen and forms dense white fumes of phosphorus pentoxide.
Oxygen is the active component in the air that burns phosphorus and nitrogen is the inactive component of air that is not used in burning.
