A "gotcha" can be a pitfall, trap or potential issue in an environment or situation (or a programming language). A common phrase is "are there any gotchas?", asking if their are any potential issues that will catch you out if unaware of their presence. Gotcha can also be spelled as gotchya whereas the related term, getcha, is made by joining the verb and pronoun, get you, with -cha.
There are no written instances of "gatcha". Gotcha moment is not the same as eureka moment. The gotcha refers to being caught, as in a reporter interviewing a politician and revealing a lie, or a detective grilling a suspect and uncovering that ultimate piece of evidence that will prove his guilt. 2 I think these best fall under the category of "leading questions" That being said, I don't think there is a word for leading questions with the intent of tricking someone, though "gotcha question" seems to fit your examples well.
Gotcha Newspapersoundnik Detail, leading question: A question that prompts or encourages the answer wanted. 0 I feel that 'Gotcha' works and is in the parlance of our times. Although adding 'Ha' before 'Gotcha', in my opinion, reduces the impact. Gotcha, how did you tell that I'm not an native speaker of English, just because of my saying something about Chinese primary textbook or also because of my sucking English comments made here?
