Section-1: English 20Questions 20min
Section-2: Aptitude 30Questions 30min
Section-3: Numerical Ability 30Questions 20min
Section-4: Reading Comprehension 10Questions 20min
Numerical ability consists of simple mathematical calculations.
For Aptitude just solve RS Agarwal. http://www.vyoms.com
In Reading Comprehension, they will first give you a passage. Should read the passage in 15min and should return it. They will give a paper consisting of 10 Questions related to passage and should be answered in 5min. Note that there is a "SECTIONAL CUTOFF".
Coming to Technical Interview, for CSE and IT, they mainly concentrate on DBMS and UNIX. Apart from these knowledge of programming languages is must. If you clear the techical interview then HR is just a "Cakewalk". This is the information which I had collected from my friends.
All The Best