Buy an excellent study material for class 12th students in Physics and Chemistry. Use this external hard drive to learn at your own place. This external hard drive contains: 362 hours of 733 video parts with 182 GB size. Supplemented with 1319 pages and 62 MB size of e- study material. It covers Physics and Chemistry of XII standard CBSE and competitive exams like IITJEE Mains, IITJEE Advance, AIPMT and AIIMS. Validity: 1 year. Compatible OS: Windows XP/7/8 , License: Single Machine with Windows Operating System.