Can the President unilaterally call for a joint sitting of both Houses in case of disagreement over a Bill?
No, the President cannot unilaterally call for a joint sitting of both Houses in case of disagreement over a Bill. According to article 108, the Speaker of the Lok Sabha may convene a joint sitting if there is a disagreement between the two Houses over a Bill and it has not been passed by either House within six months of its receipt from the other House. The President does not have this power unilaterally; rather, it requires the Speaker's decision based on the circumstances specified in the Constitution.