CBSE 12th

You can pursue MBBS BMS, Pharmacy, B.Sc in Biology, Agriculture etc. Apart from these, you also have many other options in the field of biology. Decide which career you want to choose and work for that. There is also a Shiksha's dedicated article on topic at https://www.shiksha.com/courses-after-12th/amp/science.

Your state Entrance Exam and IIT JEE are the two exams that give chance to take admission in good colleges. But, you will have to work really hard for them. If you are prepared for extra effort than this will be the best option. Otherwise opt for a good private college.

There is nothing to worry. Keep working hard and smart. Definitely you will get good marks. Whatever time you spend in your school or in coaching studying will not be as effective as the time you spend by self-studying. So, I suggest you to give at least 2-3 hrs despite your school and coaching for self-study till the month of December. And, after that try to make it to at least 4 hrs. Try to complete your class 12th (PCM) course by November last week, as you will get 2 months' time to revise the whole course. Keep meditation for 15 minutes daily, it will help you in making concentration.

Sorry to say, but you can't get admission for M.Sc IT, because it needs science background. Better think to go ahead in your expertise only. Now a days, there are more opportunities in commerce and business than ever before. Due to lack of rational skills as well as Maths and logic scarcity by the candidates in commerce most of the engineering students are getting selected for commerce and business companies.

Maximum 50% or 60% is required in class 12th for SC candidate of Jharkhand state and to get B.Sc Agricultural.

The TOEFL and the IELTS probably top the list with regard to the sheer number of students across the world needing to undertake one or the other to demonstrate English language proficiency. The widest possible selection of universities and colleges accept TOEFL scores, including the top 100 in the UK, U. S, Canada, Australia and New Zealand. The IELTS is a mandatory exam for Indian and other non-native English speakers, especially in the Commonwealth countries, for entry into most reputed universities and colleges overseas, and occasionally for immigration requirements as well.

You need to have scored a minimum of 75% in your board exams. Apart from that, you need to either qualify KVPY-SA or SX with a rank as good as 250. The channel through JEE Mains/Advanced is quite difficult as they have extremely high cut-offs there around 250 rank which is very difficult to get as compared to KVPY.

Kindly be more specific.

Yes, you are eligible. The minimum percentage required is 50%.