Crystal Crop Protection interview questions

It is about campus hiring, the package offered was up to 5 lac. They started with presentation about the company, which they did not do in detail, finished in ten minutes. Then there was an aptitude test consisting of mixed questions of farming, management, maths, reasoning, English. Test was of moderate level. Then there was GD, where they selected 17 of 33 candidates. There was then preliminary round of interview where they selected 10 of 17. I was rejected at this round. Questions asked were basic. Why this company? Why MBA after engg.?