The first incident was reported from north-east Delhi's Welcome area on Monday night in which the 25-year-old woman was raped allegedly by four people in the moving car.
The woman, who is separated from her husband and searching for a job, was spotted by a police patrol van near a dust bin in an unconscious state.
She was rushed to the Guru Teg Bahadur hospital where her condition is stated to be out of danger.
When she reached, three of his friends joined him and allegedly offered her drinks laced with sedatives, they said quoting the woman. Yashdev was arrested after a medical examination confirmed rape.
Another case was reported from Anand Vihar area where an eight-year-old girl was raped by an unidentified person this morning. The victim was found lying in a pool of blood and she is undergoing treated in a hospital.