Dear aspirant,

Yes you will be able to apply and sit for the exam since there is no minimum percentage in your respective fields mentioned in order to be eligible for the exam but yes, you will have to clear your backlogs by the final year or as soon as possible, before getting an admission into a college via gate or getting a job.

After clearing gate, the PSU might call you regarding that and you will be provided with a date within which you should submit your provisional degree certificate in order to be eligible for the admission process. The same applies for getting a job.