I advise you to follow the compilations of suggested answers, RTPs and other material given in our study material problems for Accounting Standards..Those are sufficient, and if you want more, you can refer DS Rawat for AS. Regarding what type of questions they ask in exams, institute gives both practical-based and theory based questions..so one should be perfect in theory to do practical situation problems..Also attaching herewith two of the files, which were earlier posted in caclub, for your reference..and some model test papers are available in primeacademy.com for your reference..do all these model papers in primeacademy to gain more knowledge..
https://primeacademy.com/prime_model.html
https://primeacademy.com/progresstest.html
All the best..