IPM entrance test has 2 sections : Section 1 : Quantitative Ability and Section 2 : Verbal Ability.
The questions are based on mental aptitude and one’s hold over the English language. You can practise such questions from a lot of sources.
However, this can help you. Have a look :
An IPM friend of mine once told me that he appeared for IPM test because he wanted to practise the VARC section for BITSAT and later decided to join IIM Indore. So, the aptitude test isn’t very IIM I specific.
Hope this helps !
All the best.