Hi anisha 

One of the best books to prepare for IPMAT is crack the IIM indore IPM entrance exam published by person and written by IIM lucknow Alumunus Nishit Sinha.

You should also go through the last 10 years paper it will help you and get you a idea .

Feel free to ask if you have any queries all the best for your feature

 Hey.  

Here are the best sources to prepare for IPMAT for each section

 For Quantitative Aptitude-  Mathematics by R.D. Sharma. (11th, 12th class), Quantitative Aptitude for Competitive Exams by R.S. Aggarwal    

For the Verbal Ability section you can use   Word Power Made Easy by Norman Lewis for your Vocabulary section and English Grammar and Composition by Wren and Martin for others.    

Apart from this, you should go through Newspapers like The hindu, Economic times- online or offline which are considered very usefull in such competitive exams.  

Best of luck