R.V. College of Engineering

Not compulsorily rather, you need to have biology as a compulsory subject for pursuing biotechnology.
But the criteria could differ from college to college. Some may ask for maths as an addition but not compulsion. So you can go for biotechnology even if didn't have maths.
P.S: Choose a college very carefully. Placements are rather important.
Good luck!

You might have a chance if you have any reservation criteria else give it a try. You have very great chances to get into this institute with this rank.
Attend the counselling and choose your options appropriately.

Enter your score and check here:
https://www.google.co.in/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor&ved=2ahUKEwjUpLbay7bbAhUR448KHeU8DUkQFjAAegQICRAB&usg=AOvVaw1N9BzFtyUCP4JU-2UQHQ0H.

I think, it is difficult, because the students with the rank below 5000 are eligible to get admission into these colleges.

Hello Nikitha,
As I see your rank, frankly speaking, it is very high. For admissions in RV and BMS, you need to be under 1000 and for other top colleges, the maximum rank is 15-18K.

Hello Jagdish,
25000 is a very high rank to get RV or BMS for any branch. Even you are not eligible for Sir M VIT and BIT in this rank.