CAN MY APPOINTMENT TO GOVT JOB BE CANCELLED AFTER 9 MONTHS OF JOINING

That is unfortunate and I feel for you. Coming to legal remedies, ask your counsel to read Rajesh Kumar v. State of Bihar (Supreme Court, 13.03.2013), Sahil Aggrawal v. State of Punjab (Punjab & Haryana High Court, 26.04.2014) and similar judgments following Rajesh Kumar. In these cases, some candidates were denied appointment due to error by the State but there was no fraud or mala fide. State was directed to correct the error and appoint the persons found eligible after correction of error. The persons who had been already appointed were not removed, but their seniority was directed to be readjusted with the persons who were to be appointed after correction of error. There is a problem though in these cases and yours, which is that in these cases, these persons had been serving for 7 to 9 years. Maybe you could also do so if you get an interim relief not to disturb the appointments. Like I said, take the case ahaead based on the judgments that I've mentioned. All the best.

Both the judgmemts lay a precedent on fate of candidates selected or rejected on account of an error by the appointing authority with no error on part of the candidates and no fraud. In the judgments, error was in marking the answer sheets and in the querist's case, it is error in verification of documents. In my opinion, they constitute good law for the querist's case and I'd be happy to have it tested before the High Court had I been representing the querist. I'd also like to read a judgment taking a contrary opinion supported by judgments not empty oneupmanship :) I've researched as far as I want to, working pro bono :)

As for the querist, yes, having a single vacancy creates problems. From my experience, if your case is pleaded well on equity and estoppel, Court might ask the authority to see if both the candidates could be accomodated. That's not so rare before High Courts. However that's not something you can rest on and you have to contest on these two grounds with fervour!

And Om Prakash saheb, please care to read the query. He has not secured appointment despite low marks but because of error by State qua verification of documents;  it's an irregularity, not an illegality. Also ji, nobody has won the case yet. And I can't see wherefrom you're reading that the interview was a sham in the present case - that's a fraud which has to pleaded in accordance with CPC and proved whichm insofar as I can see from the query, is not the case. If there's fraud even amounting to favoritism in interview,the entire process is vitiated but that's not what the querist has stated.