Complete video lectures are available in DVD & USB. Payment can be made by debit card/credit card/COD. Cash on Delivery is also available Click to buy courses http://www.nucleoniitjeekota.com These videos are classroom recording of lecture taken at Nucleon chemistry classes kota . Nucleon is the individual institute of kota dedicated for IIT-JEE Advanced chemistry . Nucleon is run by two subject experts NV sir (B.Tech. IIT Delhi ) & VKP sir (M. Sc. IT BHU ).