Class 12-science

Yes, it is enough to get admission.

Know your college admission chances based on your JEE Mains rank, home state, caste, gender, etc., here:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

Work on your strengths to become successful. So, don't pursue which is not your passion. Your HSC and NEET marks are less, you might not be strong in those subjects, try other subjects, work hard and be a successful professional in the field you have interest.

Yes, you're eligible for admission into Noida Institute Of Management and Technology for a BCA course. You can visit the college for more accurate details about the college. If you want to learn programming languages which you will be studying in your BCA course then you can check out this app "BCA - Course Programming" which is specially designed and developed for BCA students and is available on Google Play Store. It has programs and assignments of languages like C, C+ and Java with their outputs. You'll be studying these languages in your 3 years of BCA.

Hi,
Please use this college predictor tool for better approximation
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor&ved=2ahUKEwi16pvN7MDiAhUIbn0KHXEMDQEQFjAAegQIBRAB&usg=AOvVaw1N9BzFtyUCP4JU-2UQHQ0H
Best wishes.

Hi Ragini Singh
Kindly predict your college in this college predictor. JEE Main rank predictor is an online tool which predicts the candidates rank range and probable colleges based on the difficulty level of the examination, average marks scored in JEE Main and seats available in IITs, NITs, GFTIs, and other SFTIs. The rank predicted might not be accurate but it certainly does give an idea to the aspirant. Know your college admission chances based on your JEE Main Rank, Home State, Caste, Gender, etc. Here https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor.

A student must obtain 50% marks in PCM+ English in class 12th with OBC +PWD to have 45% marks. This is what official site shows. I am sure if 45% is for OBC, then it should be same for other reserved categories as well. I feel you need not worry. Best wishes.

You can apply www.amity.edu/Lucknow here. The admission process is very simple, you just have to fill an online application and further information will be provided to you by the university.