Police said that the incident took place around 2 pm when the woman, identified as Urmila Singh and a resident of Panchsheel area of Ghaziabad, was returning home from a nearby market.
"When she was on her way home, two bike-borne unidentified youths approached her and started enquiring about an address. After a few seconds, the pillion rider tried to snatch her gold chain," said a senior police officer.
The officer also said that when they were trying to snatch the woman's gold chain, she suddenly took out a cold drink bottle from her bag and hit on the head of one of the accused.
Police said that based on the woman's complaint, a case has been registered against both the youths, who would be arrested soon.