CA

SUBJECT - TOTAL MARKS
Paper - I
Accounting - 60
Mercantile Law - 40
Paper - II
Maths - 50
Economics - 50
If you score 70% (140/200) you get Distinction. This should be your aim.
To pass you need
50% overall (100/200)30% in each subject
Paper - I
Accounting - 18
Mercantile Law - 12
Paper - II
Maths - 15
Economics - 15.
Eg: 102/200 but 10/40 in mercantile law results in failure.
All the best !!

ForCAT exam, you mush have atlest 50% in your graduation. Ckearing the concepts of class 8, 9, and 10th maths will help. But CAT complete course books and solve as many problems as you can. It will help you. Learn free online english courses. All the best !!

It is only required to crack CPT.

After completing the exams you can join coaching classes.All the best.

Yes you can go for CA as you have completed b.com so there is no need to appear in firf exam of CA which is CPT now you can appear directly In second exam that is IPCC then you can do article ship and then final exam.You have to do hard work to crack or excel in CA exams.All the best.

Both are professional courses
you can do your own practice after doing any course
Likewise CA has more scope and you can start your own practice hence do CA

UK have a different name of courses ACCA, ICAEW, CPA etc. You hv the option of completing CA in India and then applying for membership at UK. Check here.
http://www.icai.org/post.html?post_id=11449