@Yoong Liat,
Look at the title of the thread, Yoong Liat marked as 1).
1) Would it be wrong to use 'will'?
2) Will it be wrong to use 'will'?
This is pretty much the same thing as in the text. You've used 'would' [in 1)] because it leans towards asking about a theoretical issue.
Now, look at 2). I've changed it to 'will'. Using 'will' there is not wrong but again, it doesn't sound as natural. Perhaps if the situation was a more pointed, personal one, for example, if you were in a classroom and you asked the teacher about an example you had made, then 'will' might see use.
But in this last situation, there are also considerations relating to politeness/softness/a less direct question.