Pawar, seeded 11th, took just 43 minutes to get the better of local lad Kieran Merrilees 21-18 21-18 to register his second win over his opponent in as many matches.
But it was curtains for Prakash as he lost 4-21 20-22 against Sam Parsons of England in 28 minutes.
Pawar will next play Germany's Dieter Domke. The German stunned seventh seed Vladimir Malkov of Russia 21-12 15-21 21-16 in another opening round clash.