prepositions - On the question or Of the question?

I hope you people are spending good days. And let me thank you for your kind assistance in advance.

For, example, let's consider I am a questioner at a certain blog.

I am wondering which preposition I should use when I ask a kind of question below.

I would like to make a questions( to potential readers ), like, "Choose the inappropriate synonym or antonym that does NOT match with the word on the question or of the question" ( The word on the question or of the question is described before the sentence above.

I am personally guessing of would be correct. Am I right about this?

And then also, is there any case in which we could use the preposition on? If there were, kindly advise me.

Again thank you very much.

Answer

Since there is a question is given ahead of time the appropriate preposition is

in
Choose the inappropriate synonym or antonym that does NOT match with the word in the question.

For example

Q1. happy 1) laughing 2) crying 3) smiling 4) glad

"happy" (the word in the question) is neither "on" nor "of" the question, but "in" Q1.

You can have a

question on something
question of something

but not

something on a question
something of a question