Hello Jagan,  Most of the companies selects the candidates on the basis of your graduation marks. 10 th and 12 th marks are not that much important in placements. But they are considered. But most of the companies consider above 60% marks in 10 th and 12 th.  So you can got a good job. But keep your graduation marks good,  means it should be at least more than 65 percentage. 

Best of luck for your future journey.

I Hope it will help you. 

Thanks.