Tanvi defeated 10th seed Shruti Mundada 21-15 21-15 while ninth seed Reshma Karthik beat sixth seed Anura Prabhudesai 21-10 21-15 at the Patliputra Sports Complex here.
In other matches, Aakarshi Kashyap beat Ira Sharma 21-12 21-16, eighth seed Riya Pillai defeated Niranjana A 21-6 21-10, 14th seed Arundhati Pantawane overcame Seventh seed Shriyanshi Pardeshi, Saili Rane saw off Ashmita Chaliha 20-22 21-11 21-18, 13th seed Rasika Raje prevailed over fifth seed Neha Pandit 21-16 28-26 and second seed Rituparna Das beat Ananya Goel 21-8 21-7.
Second seed Sameer staved off a spirited challenge from Subhankar Dey before winning 19-21 21-14 21-9, while Prannoy beat Pallab Bose 21-8 21-14.
Fourth seed Harsheel Dani overcame a stiff resistance from Abhishek Yeligar 21-19 15-21 21-13 while newly-crowned world junior number one Lakshya Sen beat Talar Laa 21-14 21-16.
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In other men's matches, third seed Sourabh Varma spanked Saarang Lakhanee 21-9 21-9, 15th seed Ansal Yadav beat Saurav Kapoor 21-13 21-15, fifth seed Pratul Joshi defeated Harshit Aggarwal 22-20 21-17 and Siril Varma shocked eight seed Neeraj Vashisth 24-22 21-10 to reach the final 16.
In women's singles, Ashmita Chaliha stunned fourth seed Sai Uttejitha Rao Ch 21-18 20-22 21-14 to reached the pre-quarterfinals.
Seventh seed Shriyanshi Pardeshi, third seed Sri Krishna Priya K, 12th seed Anuriya Das also reached the next round.