Heyy Aarish.....

The fees waiver for  BITS is as : 

• Students who have obtained 95% or above in the aggregate of the Qualifying Examination are given a merit scholarship of 40% of first semester tuition fee. 
• Students who have obtained 90% or above but less than 95% in the aggregate of the Qualifying Examination are given a merit scholarship of 25% of the first semester tuition fee
• Students who have obtained 80% or above but less than 90% in the aggregate of the Qualifying Examination are given a merit scholarship of 15% of the first semester tuition fee. 

And for the information regarding scholarship based on 12th marks , visit below link : 

https://www.careers360.com/question-how-do-i-get-scholarship-after-completing-my-12th