Why do the Posts of Prime minister, chief ministers, federal ministers and provincial ministers are not filled through competitive exam like CSS. What are your views about this.

The Cabinet of Pakistan (Urdu: کابینہ پاکستان‬‎, Kabina-e-Pakistan) is a formal body composed of senior government officials chosen and led by the Prime Minister.[1] All cabinet members sworn in are designated Minister, and are seated at their respective ministries located in the Pakistan Secretariat.

The Cabinet Secretary of Pakistan serves as the administrative head of the Cabinet Division and reports directly to the Prime Minister.[2] According to the Constitution of Pakistan, the Prime Minister may dismiss members of the cabinet, but must do so in writing, and new appointees must again be approved by the Parliament. The cabinet meets weekly in Islamabad. The cabinet is granted constitutional power under Article 81D of the Constitution of Pakistan.[3] The existence of the cabinet dates back to Prime Minister Liaquat Ali Khan, who appointed civil servants and statesmen to his first cabinet.