Explanation

Explanation

• The Sui Gas Field, located near Sui in Balochistan Province, Pakistan.
• It was discovered by Pakistan Petroleum Limited in 1952.
• Production of Sui gas began in 1955.
• It remains the largest natural gas field in Pakistan.

Explanation

The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen.

Explanation

The temperature increases with an increase in Pressure in a closed system, or in specific atmospheric layers like the stratosphere or thermosphere.

Explanation

• The lightest gas used for filling party and advertisement balloons is hydrogen.
• However, due to its flammability, helium is more commonly used despite being slightly heavier, because it is safe and non-reactive.