Dear Aspirants ,

If we are talking about the Btech placements then it will depends upon companies and their criteria such as TCS recruiters Criteria -

You should clear your 10th,12th with 60% aggregate and at least 60% or 6.5  in your btech then only you are eligible for the TCS campus drives but different companies are different criteria and some of companies are only allow for  the particular branches .

So it will very difficult to answer but mostly every companies criteria is this much and you should prepare accordingly .

Hope it will helpful

Thanks

Dear Aspirant
The placement of a student entirely depends on the performance of the students .Like in  college  ,students also receive Pre placement offer (PPO).This is judged and notified by the students performance in CGPA ,aggregates and internships ,i.e overall consideration . But only few of them get such opportunities .
So getting placed into a company entirely depends on you and how ho perform in the preliminary test , group discussion round and personal interview.
All the best!