[Santhosh Ram]

I don't think you will, get it.
Usually the marks goes to those who have attempted the question in case of successful challenge.
If the Gate committee decides that the question is completely wrong and decides to award the marks to all students, then its a different case.

OK....but wat if I attempted it wrong....my answer is neither d correct answer according to key nor d real correct answer then?

there will be 2 options. Either they will make it a mear attempt or the can announce 2 answers as correct.