I have passed Socity and environmet subject in one week study.
This everything we learnt in schools (not collage....scools only)
just we have to write down it in some proper manner, so read books.
otherwise its a subject of comman sence.
make your own notes and "title technique" (follow my below link for more clarity regarding that)
http://www.amiestudy.com/forum/paper-checking-t1298.htmlyou need to study for not missing any major points related to sbuject.
detaling of it is easy and use your own understanding your own words for that.
try to remember some statistical data related to topic, u may think its not important.
but it can give you good marks with right presentation in the paper.