China picked up a first gold medal at their home world athletics championships when Liu Hong led Lu Xiuzhi across the line after the duo blew away the field in the women's 20 kilometre walk on Friday.
The 30-year-old Indian clocked 4 hours 7 minutes and 55 seconds, which was 26:57 seconds behind the timing of gold medallist Matej Toth of Slovakia.
National record holder Khushbir Kaur finished a disappointing 37th while compatriot Sapna was disqualified from the women's 20km race walk event on the seventh day of the World Athletics Championships in Beijing.
Khushbir Kaur clinched the silver medal in the 20km race walk before 400m runners Rajiv Arokia and M R Poovamma grabbed a bronze each in the men's and women's 400m respectively while Manju Bala secured a bronze in women's hammer throw to add to the growing medal tally from track and field events.
Olympic bronze-medallist M C Mary Kom led the charge as Indian women boxers packed a powerful punch by assuring themselves of medals in each of the three weight categories at the 17th Asian Games, in Incheon on Sunday.