Two parts to the phone interview:
1)Casual chat with the usual competency questions where the interviewer will further prompt on your responses. Questions like:
Why do you want to do trading?
Tell me about a personal achievement that you are proud of.
2) Choose a topic out of the 4 given and elaborate on the topic chosen. Again, the interviewer will further prompt you on your responses.
Eg. topics: Leadership, Hazardous chemicals, emissions