Hello Supragya,

The IBPS preliminary exam paper has 3 sections,  namely:

1. Reasoning ( 50 questions,  50 marks) 

2. English Language (50 questions,  25 marks) 

3. Quantitative Aptitude (50 questions,  50 marks) 

If you scroll down a little,You can find the topic wise detailed syllabus here:  https://www.ibpsrecruitment.in/ibps-agriculture-field-officer-syllabus/2447

Hope this helps :)