Exam

If fresher decent CAT/ XAT score >86 percentile.
if work exp/ excellent past academic record >84%

You can start preparing for quantitative part and try to finishing all the syllabus and make sure you know all the basics. Make sure that you have formulas on your tips.
You might not be able to improve on your verbal part because it generally requires time. What you can do is start reading newspape

1. You should know the syllabus.
2. Practice a lot of questions topic-wise.
3. Clearing all your doubts.
4. Learning various tricks for fast reading and mental calculations.
5. Giving all the mock tests seriously.
6. Analyzing your mistakes and noting them down.
7. Studying religiously for 3-4 hours daily

Yes, but you must prepare diligently for around 4-5 months. A lot of practice is essential, if you want to score well in exams like CAT. 3-4 hours of study is enough, if you study seriously.
Good luck.

You are recommended to do B.Tech in automobile engineering or mechanical engineering followed by M.Tech in your chosen specialization.

Which course and university have you applied to?

To get admission in DY Patil College, the cutoff is 75 percentile and fee structure is around Rs.5 lakhs for 2 years.

The syllabus is same for every year. You can just go through the books like:
1. AS Agarwal on quant.
2. DI and Verbal.
3. For LR, you can go for Peeyush Bharadwaj by Arihant series.

Hi Radhika Bhoge,
In India, MBA programs are based on entrance exams like CAT, MAT and other state level entrance exams. The entrance exams accepted by private business schools are NMAT, SNAP, etc.
If you want to get admission in the best business school, you need to crack CAT exam.
All the best.

In case your programming skills are not good and you are sure about not making a technical career then MBA is an excellent choice to switch career. You are advised to prepare for prestigious MBA entrance exams such as CAT, XAT, MAT, SNAP, IIFT, IRMA etc.