Explanation:

When the Lok Sabha is dissolved, all business including bills, motions, resolutions, notices, petitions and so on pending before it or its committees lapse. They need  must be reintroduced in the newly-constituted Lok Sabha.

A bill pending in the Rajya Sabha but not passed by the Lok Sabha does not lapse. A bill passed by the Lok Sabha but pending in the Rajya Sabha lapses. A bill passed by both Houses but pending assent of the president does not lapse.