Online Test. Part 1: 18 ques. Number series
Part 2: 18 ques. Quantitative (System calculator allowed)
Both Parts having 2min 15 sec per question separately. No negative marking
Writing skills: Email : 15min to summarise a paragraph and write an email to a client in with body of 6 sentences or less.

4 groups
Each grp 8-9 members
Our topic: Corruption: A way of life in India
Others: MNCs against Indian companies, Print media vs Electronic media.

>6.5 and amongst top 60 % of the whole branch (e.g. i was amongst top 13 of 21 in B.Tech Envtl. Engg.)

C Programming(as i told i did +2 in CS)
Microprocessor
OS
Environmental: Project definitions,
Global warming
Ozone depletion, GHGs
Number series
Geometry
Permutations n Combinations

Why IBM?
Why did u not sit in TCS?
Why took Envtl Engg?
What was the most imp thing in ur life? (Dedication with example)
Do u think u will be selected? Why?

Dos:
1) Study aptitude esp. Number series, quantitative, basic maths and physics.
2) Know definitions frm your projects
3) Study some programming (C, C++) and tell u know these things at least basics.
Don'ts:
1) Don't quit. IBM is easy to crack even if u prepare a day prior. ask me:)
2) Don't listen to others taking things too lightly.
3) Don't worry. There will be high chances of getting selected. Just give ur 100%. Best of Luck! :)

61 elligible and appeared for written. 35 qualified for GD. 30 for interview out of which 22 finally selected.
My interest in C worked very much in my favor since i think i was one of the rare once to know so much abt C despite being from non IT branch. I praised IBM, was confident in GD. Most importantly i kept on moving forward despite any hiccups in the way.