Sui gas field was discovered in:

The question asks for the year the Sui gas field was discovered. The Sui gas field is one of the largest natural gas fields in Pakistan, located in Balochistan province. The correct answer is 1952.

• The Sui gas field was discovered in 1952 by Pakistan Petroleum Limited (PPL), a major Pakistani exploration and production company. This discovery was pivotal for Pakistan's energy sector, providing a significant source of natural gas for industrial and domestic use.
• Commercial exploitation of the field began in 1955, leading to the establishment of a pipeline network across the country.
• Options A: 1950, C: 1956, and D: 1958 are incorrect. While these years fall within the early development period of Pakistan's energy infrastructure, the actual discovery of the Sui gas field occurred specifically in 1952.