Hello.

I didn't get your question but I can answer as fas as understood and please feel free to comment below if you have any doubt.

Practical exam will be in 12th class and improvements will be after 11th class . You have to choose what subjects that you want to write in improvements be it one subject or all. And you have to attend only for those. And comming to the practicals you have to go to the respective center and do the practicals over there.

Hope this is helpful.

Good luck.