Online Aptitude Test, The T.C.S. TouchStone:-
Well, actually it was a non sense.
TCS repeat the questions from the preview (Openseesame sample u give) + questions available on internet.

Just do all the questions seriously even you can learn them :)....well actually a crap by TCS, they will give you same to same questions.
Furthur you may get same question repeated thrice or four times in your actual exam also.

For eg, if 12 programmers can write 12 lines of code in 12 minutes than how much time will 72 programmers will take in writing 72 lines.

I had this question asked thrice, only the values were changed.

My TIP: Do all the questions of your previews and also other questions available on internet, then you will definitely pass otherwise its not an easy task to solve the questions at first sight.

60% throughout

Depends on your luck. Every interviewer had his own style of judging you.
Some will ask you questions based on your industrial projects only, while some will ask you questions based on core subjects like DBMS, c/c++ etc while others may just mess it up for you by asking your favorite subject and then asking you some questions on that subject only, but beware its from your favorite subject, so be ready with some intelligent ans to some intelligent questions.
Further don't write anything in your resume which you don't know about. Particularly in technical skills.
So, totally on your luck what sort of interviewer u get....

Be confident, have faith that you can clear it.
Cool head is important for any interview.

Prepare general questions like:
ur introduction
why tcs??
your strengths
weaknesses etc

Generally if you have good comm skills, you will get selected.

Must give the preview at openseesame.
Find out the questions of tcs.
If you don't get any, give me your e-mail id, i'll send you 100 questions which will serve you for sure.

Be prepared with your core subjects and your projects for technical interview.

ALL THE BEST!!!!!!!!!

250 applied
164 selected after aptitude (Mostly were well prepared for it.).
140 selected after Technical interview( MR interview was with technical itself)
Finally 132 got selected after HR.