State Wakf Board is conducting free mass marriages for the economically backward Muslim youth on May 8. District Collector M. Ravi Chandra, in a statement here on Thursday, said those who wish to participate in the mass marriages would have to submit applications in the office of the Tahasildar on or before April 30. He said the Wakf Board would present a Lacha, holy Koran and Rs. 15,000 cash each to couples.