Explanation

• Nitrous oxide, commonly known as laughing gas.
• It is a colorless, non-flammable gas used in medicine.
• Nitrous oxide (N₂O) causes temporary laughing and relaxation.

Additional information:

• Nitrous oxide was discovered by Joseph Priestley in 1772.

Last verified on 18-01-2026

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

• Carbon dioxide (CO₂) plays a crucial role in maintaining Earth’s atmospheric temperature.
• It traps heat through the greenhouse effect, keeping the planet warm enough for life.

Additional information:

• CO₂ levels in 2025 reached ~421 ppm (parts per million) globally.
• Plants absorb CO₂ for photosynthesis, partially regulating its atmospheric concentration.

Last verified on 17-01-2026

Explanation

Explanation

Argon is chemically inert and does not easily form compounds, a key property of noble gases.

It belongs to Group 18 of the periodic table, which contains all noble gases.