hi,

see if you want to join iim for mba courses you need to crack CAT (common aptitude test) exam. question of cat is mostly on logical, reasoning, english and quantitative analysis. so regular study and practice plays a vital role. you may follow arun sharma and rs agarwal for practice and give regular test series to gain speed while answering question. careers360 has cat mock test exam which you may appear to know your score and percentile.

https://bschool.careers360.com/articles/cat-mock-test