Anup Sridhar and Saina Nehwal cruised into the singles second round but Shruti Kurian and Jwala Ghutta bowed out of women's doubles at the World Badminton Championships in Kuala Lumpur, Malaysia, on Monday.
Sridhar got the better of Juergen Koch of Austria 21-15, 21-19 in 36 minutes while Saina beat Switzerland's Jeanine Cicoginini 21-12, 21-12 in first round matches.
Sridhar, however, has a tough challenge ahead, as he faces Olympic champion Taufiq Hidayat of Indonesia next.
Saina will play either Juliane Schenk of Germany or Kristina Ludikova of the Czech Republic.
The country's top women's pair Jwala and Shruti went down fighting 22-20, 15-21, 18-21 against the Swedish pair of Elin Bergblom and Johanna Persson.
Men's national champion Chetan Anand is scheduled to launch his campaign with a first round encounter against ninth seed Sony Di Kuncoro of Indonesia on Tuesday.
Trupti Murgunde will play Pui Yin Yip of Hong Kong in the women's singles.
In the men's doubles, Rupesh Kumar and Sanave Thomas faced Svetoslav Stoyanov and Mihail Popov of France.