Hi Aspirant

In group discussion you will see very common topics which seems to be easy but you will face difficulty to gather points about it suddenly.

You can prepare common topics like:

Co-ed is good or bad.

Live in relationship is destroying Indian culture.

Factories are destroying environment.

These topics will be helpful to you.

You can prepare for group discussion from the website indiabix.com

There are large number of group discussion topics for all streams along with the answer.You should be confident enough and practice interview from the wesite career ride.com and fresherworld.com,prepadviser.com  and there are many more on youtube and google.

Hope this helps you.