Maths Spl

Concentrate first to complete 11th and 12th NCERT. After that you can continue your practice by solving R. S. Agarwal , Arihant , and also if possible try to get practice material from leading test preparation institutions. But one thing make sure that whichever book you pick , try to solve each and every problem of it from each and every topic.
All the best.
Hope it helps.

Dear Sayan,
You can check these field for your further education :
Geo informatics & Remote sensing
Microbial science
Genetic science
Environment science
Geology
Marine science
Wild life
forensic science
Horticulture
Clinical neuroscience
Virology
All the best

You should choose that branch of engineering which you have interest in. Although, CSE/IT is the highest paid right now, you have to maintain a good GPA in college to get a good package. So to get a good GPA you should have interest in that field. Mechanical and Civil have good govt and pvt job opportunities. ECE from a good college also fetches a good package.

From this year, students who don't have Mathematics in Class 12th can also apply for IPM. Till last year Mathematics was mandatory.