Is JEE Main online or offline exam preferable?

Both online and offline modes of JEE Main have their advantages. Here are some of the facts about the online mode.

• The online mode for JEE Main is held a week later than the offline mode. So, you will get some extra time to prepare.
• In online mode, you will have the advantage to change your answers.
• In offline mode, you need to mark your answers more carefully since you can’t change your answer.
• Although the examination centers usually have enough backup systems, there can be technical issues. 
• In offline you may have a lack of space for rough work and need to optimize accordingly. 

In terms of difficulty level, there are no such differences between the two modes. So, you can choose any of these two modes according to your convenience.