When the Lok Sabha is dissolved, all business including bills, motions, resolutions, notices, petitions etc. pending before it or its committees lapse. They (to be pursued further) must be reintroduced in the newly constituted Lok Sabha. [Prorogation does not affect the bills or any other business pending before the house. However all pending notices (other than those for introducing bills) lapse on prorogation.]
However, some pending bills and all pending assurances that are to be examined by the Committee on Government Assurances do not lapse on the dissolution of the Lok Sabha.