Chitra, the National Champion in the 58th National school games at Etawah, clocked 10 minutes 05.22 seconds to grab the gold.
A Plus two student of Mundur Higher Secondary School in Palakkad, she had recently won the gold in the South Zone Junior Athletic Championship at Kochi, timing 10:39.4 secs.
Twelve Kerala athletes, including seven girls, are part of the Indian team for the championship.
Kerala State Athletic Association Secretary M Velayudhan Kutty expressed happiness and said the athletes would perform better if they get enough exposure.