Will i be to get a good job after 58% in 12th or is this going to effect placement oppurtunitues ?

It occur some effect because some company have require throughout 60% marks from 10th class but there is no need to worry so much because today there are also so much only check current degree marks

I don't think so. There are few organisation who want minimum 60-65% throughout your academic career however, they are few. There are many organisation who never bother about academic performance. In my whole career so far as an HR and as a recruiter, I have only given weightage to consistency not