How do I answer the profile detail form in the IMT Ghaziabad CT-GE-PI?

Keep your answer crisp. Draft your answer in a way that highlights the applicability part. If you have work experience, write what kind of work experience you have and the key deliverables. Mention your roles and responsibilities. If you are a fresher, mention academic achievements, particular subject knowledge or General Awareness especially corporate ones like the latest disruptive technologies, mergers acquisitions, etc. 

For extra-curricular activities, you can mention any national-level achievements or participation. If you don’t have any national-level achievements to talk about, you can talk about undergraduate extracurriculars.

This is not only applicable to IMT Ghaziabad CT-GE-PI. It is applicable to all B-Schools applications. Keep it precise and talk about what you have done and can produce evidence of.