Respecting your request, i am making a post on this issue.
Where to start?
Start the preparation by taking out the CAT exam papers and learn it completely. RS Agarwal book wont help you to answer the pH test.
What to study?
Probability this is the section which you need to work on. The sums will be tougher than you expect.
Seeing Agarwal alone will not help you. But do learn the formula’s from the R S Agarwal book. This will help you certain extend.
Which section can i score easily?
There are 3 sections. The section where you can score is VERBAL section. This is the key for your success.
“There is negative marking So Dont attend the question which you dont know.
Say for example if you attend 50 out of 60 questions and in that 50 say, 45 question is CORRECT, then your percentile will be higher.
Elitmus calls people for Interview depending on how much percentile they have.
Will i get call from Companies for low pH score?
No, you need to secure a cut off of 70 percentile or above, to qualify for interview calls.
If you get above 70% then you can attend all the E litmus interview provided you have the eligibility marks in your academic.
This post should be treated only as a guidance for the preparation of the Test and not as the only step to follow. You may also try your own steps for the preparation.
Thfire would encourage you to search for other previous papers and work on it. You may also study R S Agarwal as knowledge gained will always be a treasure to you.