Chemistry Spl

For that you should concentrate more on NCERT's biology. To get marks above 500 you can do the following:
Attempt 25 questions in physics. 20*4 equals to 80 and then 40 in chemistry.

Hello,
There are many career opportunities available after B.Sc. chemistry. It completely depends on you that in which field you are more interested.
You can go for scientific Assistant in CSIR labs, DRDO, BARC, etc.
If you are interested in civil services, then go for IAS, UPSC Exams and IPS Exams.
Government jobs - competitive exams - SSC exams, bank exams, etc.
Teaching field - become a lecturer in colleges.
I hope it will help you.
Best of luck!

All parts are important, there is nothing like important questions, all the topics are interrelated to each other.

Firstly, refer NCERT for PCM and try all the problems to get you basic concepts cleared and then go for reference books like H.C.Verma for Phy., M.L.Khanna for Maths and O.P.Tandon for chemistry. I would suggest you to join a coaching as it will assist you in preparing in a proper curriculum with weekly tests to evaluate your preparation.

You are not eligible for M.Sc CS / IT because of your non mathematics background. Although, majority of MCA colleges also have mathematics as mandatory requirement, but some universities such as IGNOU allows non mathematics students to do MCA. You may evaluate doing MCA from such colleges to fulfill your dream of becoming an IT professional.

Yes, you can get it. Meanwhile, it is recommended that you develop an experience of at least 3 years so that you can qualify for entry position into IIM's teaching faculty.