For Pakistan Affairs, you will need to cover the following topics:
(1) Decline of the Mughal Empire: Causes, Rise of Colonial powers
(2) War of Independence: Causes, Events, Reasons of Failure
(3) The Muslim Revivalist Movements of the 18th and 19th century (it would be good if you cover the Hindu Revivalist Movements as well)
(4) Political History of the Subcontinent: Constitutions, Hindi-Urdu Controversy, Formation of Congress, Partition of Bengal, Formation of Muslim League, Delhi Durbar, Era of Hindu Muslim Cooperation (Lucknow Pact etc), the Khilafat Movement, Cripps Mission, Delhi Muslim Proposals, Nehru Report, 14 Points of Quaid, 1937 Elections, 1940 Resolution etc
(5) After Creation of Pakistan: Constitutional Troubles, Early Problems, Martial Laws Events, Creation of Bangladesh
(6) Not just for PA but for Current Affairs, Essays etc you need to cover the following topics as well: Energy Crisis, Water Crisis, Industrial Policy and Problems, Education Policy and Problems, Population Explosion, Rural-Urban Migration, Women Rights, Children Rights, Labor Rights, Land Reforms, Provincialism vs Centralism, Trade with India
(7) Pakistan's Foreign Policy: Role in SAARC, OIC, UN. Bilateral Relations with Afghanistan, China, US, Russia, India, Iran, Turkey, Muslim World, West in General. General Outline of Pakistan's Foreign Policy
Anything above and beyond these topics is a plus point
