Colleges in Uttar Pradesh

Utkarsh,
A fair and frank observation about the placements is that BJMC only takes one to the entry-level jobs in the mass media field. The job offers in the media field are low and Amity, Lucknow takes you away from the centre of media that is Delhi. However, there are good efforts but a Bachelor's degree cannot fetch jobs to all students.

The syllabus for bsc ag. for chemistry is inorganic and physical chemistry.

Yes, you can. Candidates need to have passed 12th board examination of 10+2 schools system and should have secured a minimum of 50% marks in aggregate of the subjects in the qualifying examination.

Appear for CAT, wait for its result, apply for the application in college, selection for Interview and wait for the selection.
For details visit: https://www.shiksha.com/mba/course/master-of-business-administration-indian-institute-of-information-technology-allahabad-90770

You'll have to qualify a minimum gate score to apply to universities. If you qualify the basic merit criteria and the interview, you can successfully enroll for PhD.

Sorry to say but its not possible now, you can't take admission in BHU if you have not applied for it, given the entrance exam and then appear in the merit list, you stand no chance.

The entrance exam will be conducted next year in the month of May.