CLASS 7TH SCIENCE http://ncert.nic.in/NCERTS/l/gesc1dd.zip CLASS 8TH SCIENCE http://ncert.nic.in/NCERTS/l/hesc1dd.zip CLASS 9TH SCIENCE http://ncert.nic.in/NCERTS/l/iesc1dd.zip CLASS 10TH SCIENCE PART-I http://ncert.nic.in/NCERTS/l/jesc1dd.zip CLASS 10TH SCIENCE PART-II http://ncert.nic.in/NCERTS/l/jeep1dd.zip

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