You would not (at least if you were writing correct English). The correct spelling of the word is pandemonium.
"The concert was loud and pandemonium broke out when the lead singer left the stage in the middle of a song."
i do not know how to use embalming in a sentence. (there is the sentence)
So- you are asking when to use 'when' in a sentence. When you are asking how to use when in a question, you are already using when in a sentence, because a question actually is a sentence. I like to use when in a sentence whenever I like.
use contingency in a sentence?
How do you use sedition in a sentence
use adainty as sentence
Can you use abstemious in a sentence?
use aver in a sentence
use figureatively in a sentence
use inmates in sentence
can i use polymer in a sentence
Use it in a big sentence.
.. how can use scrum in a sentence