Three identical candles are placed in the jars shown below and lit at the same time. Jar x is left open while jars y and z are sealed with lids. The candle in which jar goes out first? x y z
A)The candle in jar x will go out first.
B)The candle in jar y will go out first.
C)The candle in jar z will go out first.
D)All the candles go out at the same time.

Question

Three identical candles are placed in the jars shown below and lit at the same time. Jar x is left open while jars y and z are sealed with lids. The candle in which jar goes out first?  x y z
A)The candle in jar x will go out first. 
B)The candle in jar y will go out first. 
C)The candle in jar z will go out first. 
D)All the candles go out at the same time.

Quizplus · Accepted Answer

When jars y and z are sealed, they will create a closed environment, resulting in limited oxygen supply for the candles. As the candles burn, they use up oxygen and release carbon dioxide. Without fresh oxygen, the candles will eventually go out from suffocation.

However, jar x remains open and allows for fresh oxygen to flow in, so the candle in jar x will last longer than those in jars y and z.

Out of jars y and z, the candle in jar z will go out first. This is because jar z has a smaller volume than jar y, and therefore, less oxygen to begin with. Hence, the candle in jar z will suffocate sooner compared to the candle in jar y.

Three Identical Candles Are Placed in the Jars Shown Below