UDAIPUR: A professor at a polytechnic college in Udaipur, Rajasthan, was arrested on Sunday for allegedly raping a Kharghar woman, who runs an engineeri-ng coaching institute. She got in touch with the accused on social media. After a few chats, he promised to marry her and called her to Udaipur. During her stay, he allegedly served her a spiked beverage and raped her. (The victim's identity has not been revealed to protect her privacy as per Supreme Court directives on cases related to sexual assault)