Hey !

Firstly know one thing , the debate topics given for ECA trials are not  much hard. So , if you are updated with the current and/or general issues happening in and around the world,  then it will be easier for you . But if you are not updated with it , then be updated for main  topics like feminism , gay marriage , girl child , abortion etc . 

And if you have any contact , then get to know the previous year topics. This can help you a lot.

While debating , use some common suitable phrases which should be on your tips. This leaves a good impression.

Your arguments should make you different amongst others in good way. They should be logical , sensible and quick. Don't take much time in thinking about the arguements as it will leave a bad impression.

Well , what ensures your admission is your past certificates. These trials are just to ensure the validity of your certificates. So , if you have good certificates , then your admission is sure . Don't worry.

Best of luck!