Which of these gases is not generally flammable?


Nitrogen is the seventh element in the periodic table. It is an important amino acid. Around 80% of the Earth‘s atmosphere comprises nitrogen gas. Nitrogen has no color, it is mostly diatomic non-metal gas that is odourless in nature. 

In its liquid state, nitrogen is also colorless and odourless, and loos similar to water, according to Los Alamos. Nitrogen gas is mostly used as an inert atmosphere whenever the oxygen in the air would pose a fire, explosion, or oxidizing hazard. 

Some uses of Nitrogen gas:

1. It is used as a modified atmosphere, pure or mixed with carbon dioxide, to nitrogenate and preserves the freshness of packaged or bulk food. 

2. It is also used in incandescent light bulbs as an inexpensive alternative to argon.

3. It is also used in fire suppression systems for Information technology (IT) equipment. 

4. In the manufacture of stainless steel.

5. To inflate race cars and aircraft tires, reducing the problems of inconsistent expansion and contraction caused by moisture and oxygen in natural air. 

Nitrogen is commonly used during sample preparation in chemical analysis. It is used to concentrate and reduce the volume of liquid samples. Directing a pressurized stream of nitrogen gas perpendicular to the surface of the liquid causes the solvent to evaporate while leaving the solute and unevaporated solvent behind. 

More questions in KBC 14 quiz: 

KBC 14: The last known living members of which animal species in India are believed to have been shot by…?

KBC 14: What did Mahatma Gandhi famously refer to as ‘His Majesty’s Hotel’?

KBC 14: At which city did PM Shri Narendra Modi commission India’s first indigenous aircraft carrier, INS…?

KBC 14: Which singer’s life was the basis for the documentary ‘Zindagi Ek Safar’?

KBC 14: While his first term lasted only seven days, who took the oath as Chief Minister for the eighth…?