Which of the schedule of Indian Constitution enumerates powers and functions of Panchayath Raj Institution ?

One of the following is not included in Writ:

Rajya Sabha members are elected by means of:

Indian President can nominate 2 members of one community to the Lok Sabha, if they are not adequately represented. The community is:

Mention the Article which gives a special statehood position to Jammu and Kashmir.

The chairman of the UPSC is appointed by the :