Hello,
So you want to clear ICAR-AIEEA UG with a preparation time of 15 days. It is not entirely impossible provided you have studied Physics, chemistry and biology in your 10+2 course thoroughly before while in school. So assuming you are from stream A, you need to attempt only 3 sections out of the 5 sections that is Physics, Chemistry, Biology, Agriculture and GK. My advice to you is that there is no need to attempt Agriculture and GK. Attempt those subjects which you have already studied in+2 , like PCB. Also if you had been preparing for NEET before it would not be a problem. If not, start by solving previous year questions of ICAR-AIEEA from today itself. Physics is 90% numericals, so you should be numerically strong for that. Chemistry is mostly from Ncert stuff. Biology has a bit of Agriculture in it too. So go for it. All the best!

Wellit sound impossible but isn't really is. If you are passionate about this the please follow the given guidelines:

1)Go to Neptune for 15 days, work hard day and night and every second.

2)After doing so, come back on earth (if you wish)

3)Give the exam.

Hi Mohit,
To be straight there is no chance for you to qualify in the exam of Indian council of agricultural research in a matter of 15days. To reason out you have close to 20 units in Physics , 35units in chemistry 10 units in biology, 10units in mathematics and 4 units in agriculture to cover that is almost impossible. But still I'll leave a link to the syllabus
https://www.icar.org.in/sites/default/files/Syllabus%20UG%20-2019_1.pdf#overlay-context=content/syllabus-aieea-ug-aieea-pg-and-aice-jrfsrfpgs-2019

But if you have answered the NEET exam this year and you have prepared for it seriously then only you might have a chance to easily crack it. Coming to books I would recommend you just go through NCERT books thoroughly and try to solve some previous years NEET and BHU and other competitive exam question papers. All in all the exam is easy if you have preparation but in your case I have no idea whether you can clear it in the first attempt or no. Try hard and I hope you can somehow succeed.
Good luck