i want some clarification regarding changing jobs in gov

Hi i will briefly try to explain my question here it goes. I am currently under government job with five years bond with my PRAN no generated.And i am not satisfied with my current job i want to change my job for sure.But my current employer does not give NOC to join other government job neither they accept resignation. So what i am planning is i am applying as a fresher to all the jobs. I am not informing about my current job and after my selection i want to resign on health grounds . so my doubt here is if my new employer gets to know about my previous employement through PRAN NO then what will happene to my new job because i have informed them i am a fresher while applying . the thing here is i don't want any benefits from my current job i just want a way to secure my new job because i am solely dependent on job.Due to my above doubt s and lack of knowledge of law i lost one nice government job which was selected this year itself. So please help me waiting for your response