The test is on logical reasoning and quantitative aptitude continued by essay writing for 30 mins. Giving proportional time to each section would be the best chance to crack it.
This test contains 2 sections. 1st one is on data structures and the other is on basic C algorithms. Solve what you think you know as the time is limited. The key part is, there is no negative marking.
Basic C questions and algorithms were asked and a bit of common sense to be used. You can expect frequent interview questions in this round.
It is just a process to know your communication skills, being confident is the only way. This round is maximum of 5 mins.
Just take it easy and you'll get it.