The tally was further increased in the 18th minute after Jeff Thys got past Vikram Pillay and Gurbaj Singh and beat D'souza low to his right.
India regrouped themselves and initiated onslaughts to reduce the margin. However, penetrations from Sunil and Rajpal bore no fruit as Belgium captain Xavier Reckinger and Vincent stood tall.
India scored their second goal in the 32nd minute when Sandeep sank a penalty corner to the right of Vincent.
India then missed a few opportunities to score. Rajpal made amends as he flicked past Vincent from a penalty corner in the 55th minute.
India's match winner came from their last penalty corner. Sandeep fired home to give India the victory.
The third and final Test will be played at Braxgata Saturday.