Help..!!!!

First, Plan your days. Keep two days before exams for the first paper

Second, You are left with another twelve days. Divide the twelve days into two parts which gives you 24 parts. 

Third, You will need to divide the parts for each subjects. Suppose other six subjects will get 4 parts each. (4 half days each)

Forth, in each half day, you need to revise 1/4th portion of a subject. It means if your 1/4th portion contains 4 chapters, that means you need to finish revision of one chapter in 1.25 hours. (Assuming that you will study for 10 hours a day). 

Fifth, Dont study single subject for whole day. Shuffle subjects. You can divide the day in four parts and apply the above method. 

Sixth, Before start of the chapter, keep a watch on time. You need to finish the same in 1.25 hours. You will become very effective in your approach. Your mind will not wander. 

Seven, Take enough sleep. Dont compromise on sleep. There is a deep science behind need for adequate sleep. So never compromise on sleep. Especially when practical subjects exams, take at least 7 hours sleep. And believe me, investing 1 more hour in sleep is better than reading 1 more hour. (Just imagine, how that 1 hour will matter as against your whole year study?) Invest that time on sleep and your mind will recollect whatever has been prepared in past. Proper sleep affects retrieval power and it makes your mind more calm. 

Eight, While going to exam, calm your mind by using any methods, Breathing exercise, meditation etc. Rest for ten mins before leaving home. This will improve retrieval power of brain. 

Thanks a lott for ua advise sir..But please do me a favour..U have assumed I study 10hrs a day..But even though I try I am not able to concentrate for more than 2 hrs at a stretch..Also I barely manage to study 4-5hrs a day..Can u suggest some more tips to increase my concentration..??I am giving only group 1 this may..