It contains 200+ concepts from chemistry which is having all important questions which is 100% expected in all engineering and medical entrances exams . It will be 100% worth full for those students who wants to score maximum marks in chemistry 100+/120 in JEE and 160+/180 in NEET and 40+/60 in aiims . Chemistry is very important for all this exams because it will help to secure good marks in entrances exams.