UGC writes to VCs, wants university students to appear for National Cow Science exam on Feb 25 UGC has written a letter to the VCs of all universities asking them to request students to appear for the National Cow Science exam on February 25. advertisement UPDATED: February 17, 2021 21:31 IST UGC has written a letter to the VCs of all universities asking them to request students to appear for the National Cow Science exam on February 25. HIGHLIGHTS UGC wrote to VCs to encourage students to take a voluntary online national-level exam on 'gau vigyan' or cow science. The exam will be held for free across four different levels and in 12 regional languages.