Who was the last Prime Minister of United Punjab?

Who was the last Prime Minister of United Punjab?

متحدہ پنجاب کا آخری وزیراعظم کون تھا؟
Explanation

Khizer Tiwana was the last Prime Minister of United Punjab, serving from 1942 until 1947, shortly before the partition of British India.

Sir Sikandar Hayat Khan was the first Prime Minister of United Punjab, holding office from 1937 to 1942.