CBSE 12th

First, go through all your NCERT topics and solve examples of same. Also, you have to maintain an aggregate of 75% in your PCM.

Students who have less than 70%marks can apply for improvement.

The entrance test will be most probably conducted in the month of April-May. I request you to contact the college officials for further updates.

No, if you got 65 % marks, then no need of it.

Hello Mr. Adyut, I'm happy to inform you that you have a pretty decent chance to get shortlisted for WAT-PI. You can go through the college official website for last year cutoffs according to the category that you belong to. All the best.

In my opinion, dropping your one year is just a waste. In fact, by taking admission now makes a continuity and the habit of self-study is in practice also. I advise you to take admission in a good college for computer Science branch.If you drop one year, then you have to make sure that you study well for JEE mains. (If you are dropping a year for JEE main paper) and qualify it with a good score, so that you can get the admission in an IIT or IIIT etc.

Probably yes, it is compulsory, but there will be many students who would be from non-biology background, but still they do. If you are good at learning, then you will learn it. So, don't worry about it.

B.Tech is much better option from the job point of view or higher studies perspective. Most of the companies prefer B.Tech holder students. And also, if you have plans for higher studies, many foreign and Indian university admit B.Tech graduates.

You can apply online with CAT/ XAT/ GMAT. Essay Writing/ Personal Interview
Shortlisted candidates will be called for essay writing and personal interview based on performance in CAT/ XAT/ GMAT. Final Selection
Candidates are selected based on score/ percentile obtained in CAT/ XAT/ GMAT. Performance essay-writing, and personal interview. Cheers!
All the best.