CBSE 12th

Hi Sanya,
Yes, you can take the TOEFL during 12th, there is no eligibility for it.

Hi Muskan,
The syllabus will differ from subject to subject and also with colleges. You should know what to study and browse through college websites and check the same.

Hi Dakshata, it varies from college to college. Majority of them requires 50% on a minimum. Additionally, you must take NATA entrance exam or any other college entrance to be considered for admissions.

Hi Deepender,
It's difficult to specify college names since they will announce their respective merit list and you will have to see where you are eligible. With 82%, it will be very competitive to get DU colleges however private colleges can be considered. You may check here for options:
https://www.shiksha.com/humanities-social-sciences/colleges/b-sc-colleges-india

You can appear for the same in next year.

Hi Alok,
You can look for distance learning opportunities. You can apply despite your gap period. You can check IGNOU, YSMOU, KSOU, etc.

Give competition exams like JEE, BITS, VITEEE, COMEDK, WBJEE, etc. and grab a seat in the best engineering colleges of India.

Yes, you can apply.And there is no pattern you should fill the form again for the exam . You just have to do one thing that is while filling the form you should mark the column of reappearing.

It is not mandatory to apply for a course in B.Sc before you have cleared your class 12th exams.
The minimum academic eligibility criteria for B.Sc course is that the student should have cleared their class 12th with more than 55% marks to apply for the programme, so it is advisable that you apply for the course after you have cleared your class 12th exams. Regards.