JEE Preparation

Yes there wont be any issue and you will treated as a normal student, gap year in between graduation creates problem but before taking admission it wont create any issue

Hi Anand,
You can sit for the improvement exams. According to the latest notification by CBSE , student needs to have minimum 75% in class 12th or he/she needs to be in the top 20 percentile of there respective boards to appear for JEE Mains 2017 and from 2017 no 40% weightage will be given to 12th marks in calculating the final JEE score.
Hope it helps. Please feel free to revert.
Wish you luck.

Hi
Since you are in 12th already so take up the tests for SAT and TOEFL/IELTS asap as the early decision for USA starts in August/September. SAT is even valid for BITS Pilani admissions. For SAT, take a look at the mock tests at collegeboard.org or take some coaching. In the meantime, select the universities where you wish to apply and see all their requirements.

I think you should prepare from Allen kota seeing result of it CS is better

if you are preparing for dropping a year and preparing for IIT JEE then I must tell you it's very very difficult

U can browse internet for chapter wise weightage

Hi
It would be little difficult to manage both as JEE preparation require regular studies and hard work. If you are very sure of doing something from IITs only, then u may take a gap year and prepare rigorously for it. Otherwise continue with ur b.tech. Alternatively, if you can manage both, u may try again.

Ankit it would be preferable to go for regular schooling if your skill of learning furndamentals is not very good. However, if you are good academically then you may begin preparing for JEE right away.

According to me, ML khanna is good for Numericals and RD sharma for theory.
Choose according to your need . If you feel confused on theory part mostly, buy RD sharma. else ML khanna .