The girl from Andaman and Nicobar, who clocked 37.250 seconds for the distance, finished way ahead of the silver medallist Tatyana Zadenepryanova of Kazakhstan and bronze medal winner Parul Akhtar of Bangladesh.
The Kazakh girl timed 40 seconds while the competitor from Bangladesh clocked 45.600 seconds.
It was Deborah's gold that uplifted the mood of the Indian camp after the hosts had grabbed one silver and four bronze medals during the evening session.
That was a good indication as Deborah, at that point of time, was No. 1 on the time chart. But she had another 250 metres to go and the Indian upped the ante with a perfect sprint to the finish point clocking 48.322, clipping off a few milliseconds in the latter half as the sizeable crowd raised the din with a standing ovation.
Of the five other finals on the day, Hong Kong riders grabbed three gold medals in men's elite 1-km time trial, women elite points race and in men junior's 1-km time trial.
