2 keys – one yellow, one white with a black keychain, with my contact details written on it.

the key chain is a black colored bottle opener, lock is a medium sized steel lock used for bicycle chain contact rohitph@iitk.ac.in

Bunch of keys without any specific key chain. It has three silver keys and one bronze key.

samsung mobile, double sim card, keypad mobile and contain only one sim . mobile no. 8359017983
if some get call me on 9198960554

Student ID card (Roll No. 13108065 , Meena Pargaei, Department of Mathematics &Statistics ), Delhi metro card was also with that.