Explanation:

The Speaker of Lok Sabha presides over a joint sitting of the two Houses and the Deputy Speaker, in his absence.If the Deputy Speaker is also absent from a joint sitting, the Deputy Chairman of Rajya Sabha presides. If he is also absent, such other person as may be determined by the members present at the joint sitting, presides over the meeting.It is clear that the Chairman of Rajya Sabha does not preside over a joint sitting as he is not a member of either House of Parliament.Joint sitting is applicable to ordinary bills or financial bills only and not to money bills or Constitutional amendment bills. In the case of a money bill, the Lok Sabha has overriding powers, while a Constitutional amendment bill must be passed by each House separately.Hence statements 2 and 3 are incorrect.