This is a Volume 2 since it only contains the CHN 2 topics. Nursing students will know that this is a 4th year subject. CHN 1 is a 2nd year subject wch was volume 1 and so i didnt buy that one. Best part is it is exactly according to the INC SYLLABUS. Ultimately, I didnt get a chance to use this book either because I already had enough books from our library which is why this book is listed as new. You can consider it "used" also in the context that it's been already bought by someone before you. But anyway not a scratch in that book. And its still discounted. All jaypee books can be trusted blindly. Got great content in it.