Heya Sumita, 

The link for mock round 1 expired on 22 June as this was only a mock round and as the main rounds are supposed to be held from 27 June, they needed to conduct it in faster way. Also the last date for Mock round 2 on josaa official website ie josaa.nic.in was 23rd June. It too has been closed now and the next round which is planned to be committed next is main round 1. The choice locking option will enable on 25th June.