1st round - aptitude test ( around half hour ) - 40-45 students
2nd round - technical test ( 1 hour ) - 25-30 students
3rd round - technical interview ( around half hour ) - 10-11 students

time : around half an hour
questions :
Technical ->
what is oops? abstraction, polymorphism etc.
classes, inheritance
a puzzle - you have 2 eggs and you need to find from which floor of a 100 storey building will the egg break if thrown.
coding - reverse string ( both recurrence and iteratively )
pointers question
question related to btp ( mine was about object tracking )
other cant remember much

HR ->
tell about yourself
i told i did my schooling from one place and now parents shifted to other place, so he asked which place you like more and why ?
questions from hss course like what you studied in this course ?
hobbies

focus on ur projects & alwaya try 2 come up with some innovative idea.....

just a good preparation of common technical interview topics such as algorithms, pointers, a programming langauge ( i prepared C ), networks, os
and sound knowledge of your recent project works ( what you did, how you did and what interests you in that etc )