CBSE 12th

It might take a minimum of 4 and a half years to 5 years for one to complete his/her CA.

No, it will not be possible. You need to perform well in class 12th and as well as in IMU CET.

Hi,
you will get call only on the basis of CAT score say 90 percentile or above.
Academics is considered only after getting a call for the purpose of admission.
Having work experience is a good thing to get a weightage during admission stages.

Hello Nikhil,I will advise you to email some universities in this regard, every university has different requirements. Some of them has not explicitly stated that on their website. They will respond if you reach them out.

Hello, you will find entry level jobs. Apart from class 12th what other qualifications do you have?
It is a better idea if you obtain your Bachelors degree in India or abroad, if you are interested to work in Scotland look for a course there. Check job portals, check the leading job portals in Scotland and find out the requirements and job profiles.

You can do B.Sc. in agriculture after completing class 12th with PCB.

You can chose geography. In geography, there is an excursion programme. By this programme you can travel in various place, depends upon the university.
Some B-schools has empowered to provide excursion programme for industrial tour or tourism management course.

Which IIM are you talking about?

Eligibility criteria for appearing in XAT to seek admission in XLRI is a recognised Bachelor's degree of minimum three years duration or equivalent in any discipline. Those students who are completing their final examination by June in the year of start of MBA degree at XLRI are also eligible to appear for XAT.

You should select the subject, in which you got the highest marks to major in. Then, look for a college under an affiliated university, which accepts students in the subject of your selection with your acquired marks.