Science

Yes, you can join the course. You need to have passed 12th from a recognized board.

Please refer to the link provided below for details regarding admissions and eligibility for a course from Madras University. Download their brochure for further details regarding course eligibility, fee structure, etc. Https://http://shiksha.com/university/university-of-madras-chepauk-chennai-23679/admission#admission.

Eligibility of MCA:
Graduation in any stream is the basic eligibility for MCA. The eligibility for qualifying marks in graduation differs from institute to institute. Most of the institutes require 45 to 50 % aggregate in qualifying exam for taking admission. Reserved categories get some relaxation in aggregate percentage.
Apart from this, there is another prerequisite for taking admission in MCA degree; one must have studied mathematics in 10+2 as a compulsory subject.

An expert committee of the UGC had two years ago recommended that students enrolled in a regular degree course should be allowed to pursue an additional degree simultaneously under open or distance education mode from the same or different university.
However, students should not be allowed to undertake two regular degrees at the same time, the committee had held.

Please refer to the link provided below for an exhaustive list of colleges which offer M.Sc. Courses in applied chemistry from Punjab. You should be able to navigate to a college of your choice using the filters on the web page. College rankings can be accessed via college brochures, as well as placement records, which should help you take an informed decision while selecting your institute. Https://http://shiksha.com/science/colleges/m-sc-chemistry-colleges-punjab.

There is no prescribed BHU UET 2018 syllabus. However, based on previous years BHU UET sample papers, Shiksha has compiled a list of topics that candidates can prepare in order to perform well in the law entrance exam. Please use the link provided below for details regarding detailed information regarding the syllabus: https://www.shiksha.com/university/banaras-hindu-university/exams/bhu-uet/syllabus.

To be eligible for BA economics (honors), it is mandatory to have mathematics as a mandatory subject.

You should have passed 10+2 with physics, chemistry, mathematics and English as separate subject and you need to have minimum of 50% marks in English language at 10th or 12th standard exam.

Please refer to the link provided below for a list of careers which are available to students with a commerce background. There are a number of colleges which offer a variety of courses and I am sure you will find a viable course which he can pursue for a bright future.
Https://http://shiksha.com/careers.