HELLO,

Yes , you can consider Geography instead of Chemistry to get in the top 20 percentile for JEE main if its a recognized subject in your HSC board, as eligibility is based on your aggregate marks in the five subjects that best contribute to your overall percentage. The top 20 percentile calculation considers Physics, Chemistry, Mathematics , one language and one other subject with highest marks , so a good score in Geography can be used to meet the criteria .

Here is the detailed breakdown :-

1.Your class 12 marks are calculated based on the five subjects that give you the best overall aggregate score

2.Subject Combination :-The combination typically includes Physics, Chemistry , Mathematics and one language like English and then any other subject you have taken in which you have scored the Highest marks

3.Ensure that Geography is considered an academic subject by your specific board for the purpose of calculating the top 20 percentile for JEE main.

4.Important thing is that be aware that Chemistry is compulsory for JEE Advanced , so choosing geography will not fulfil the requirements for JEE Advanced.

Hope this Helps!