Colleges in Chandigarh

At Chandigarh University, for B.Tech CS the average placement package as per 2018-2019 is INR. 4.5 Lacs per annum.

For B.Tech Civil Engineering, a semester in Chandigarh University costs Rs. 80,000, neglecting all the types of scholarships a student may get. http://www.cuchd.in/engineering/be-civil-engineering.php.

For B.Tech, CS Chandigarh University is the best option, as a private university in north India in all respects. So, selecting Chandigarh University would do well.

Registration for B.Ed in Chandigarh University would begin in month of April and last till late June or early July. http://www.cuchd.in/teachers-training-and-research/ba-b-ed-integrated.php.

Out of the above mentioned, a few companies visit Chandigarh University, while the others being international don't take placements in India itself.

Yes, you can, as the minimum eligibility for M.Sc chemistry in Chandigarh University is that a student should have a minimum of 55 percentage in his graduation.
https://www.shiksha.com/science/course/m-sc-in-chemistry-cu-chandigarh-university-279034

You need to clear the entrance exam first, before that you must be having good percentage in your class 12th boards.

No, it is not possible. To get into PEC good score in JEE is a must.

You may do your Post graduation (MSc) in Nursing which gives you options to choose a speciality like MSc Nursing in Psychiatry, Pediatric s, Surgery, OG etc. Another option is doing MSC in Psychology. Also there are options to do an MBA is Hospital Administration, Masters in Public health, etc.

Hii Satbir,
Here centralized admission happens through Chandigarh higher education and there is no exam for B.com.
You should secure good marks for the same in 12th.
Best of luck for the future