How is the Executive Advanced General Management Programme (1 year) at IIM Lucknow? What are the opportunities?

Rather than inquiring about the worth of a course, one should analyze whether the course is suitable for them or not. Your preference should be a priority not the worth of the course.

That being said, Executive MBA programs are suitable for 

• professionals with considerable experience (+10 years) , who are also managing a large team
• people in the consulting industry

If you don’t belong to any of these 2 categories, then the course is of no real value for you. This is because this program is far sighted and focuses on managerial elements like Organization and Strategies. Unless you are a consultant or a top manager this knowledge will be of little use. So go for it once you belong to one of the two categories only.