Chemistry of Gases and Applications

Water vapor is the most prevalent gas released during volcanic eruptions, often accounting for over 60 percent of the total gas volume. Other significant gases include carbon dioxide and sulfur dioxide, but they are present in much smaller quantities.

 Sulphur Dioxide is the characteristic gas that smells near the unclear public urinals

Tetrafluoromethane (CF4) is a gas at room temperature and ordinary pressure due to its low boiling point. Carbon tetrachloride (CCl4) is a liquid, and carbon tetrabromide (CBr4) is a solid at room temperature. Cl4 is not a standard stable chemical formula for a simple molecule like the others listed.

CNG stands for Compressed Natural Gas. It is an eco-friendly fuel alternative to petrol and diesel, consisting mainly of methane compressed to high pressures.

Ammonia (NH3) is commonly used as a refrigerant, particularly in large-scale industrial refrigeration systems and older absorption-type refrigerators, due to its excellent thermodynamic properties.

Neon gas is widely used in discharge tubes for advertising signs because it emits a bright, distinctive reddish-orange glow when electrified. Other noble gases like argon or helium can be used to produce different colors, but 'neon signs' are the most common application. Neon is the primary gas associated with these tubes.

Because helium is inert in nature and does not react with any component present in air.

Ammonia (NH₃) is a compound made of two elements nitrogen and hydrogen chemically combined together in a fixed proportion by mass.

H₃Ru₃NiCp(CO)₉ clusters contain Ru-Ni as core metals and catalyse the ammonia synthesis.

Bread mould (Rhizopus) is an aerobic organism, meaning it requires oxygen to perform cellular respiration and produce energy. While it can tolerate various conditions, it cannot survive or grow effectively in the absence of oxygen. Nitrogen and hydrogen do not support its respiration.

Correct Answer: 'Bhopal gas tragedy’ was due to the leakage of MIC.

Scuba divers use a mixture of helium and oxygen, known as heliox, to prevent nitrogen narcosis and oxygen toxicity at greater depths.

Yellowcake is a concentrated form of uranium oxide, which is an intermediate step in the processing of uranium ore.

Gobar Gas contains: Methane (CH₄) about 60%  Carbon Dioxide (CO₂) about 30%  Hydrogen (H₂) about 8%  Nitrogen (N₂) about 1%  Water vapour (H₂O) about 1% So, we see that methane is the main constituent of the Gobar gas.

Carbon dioxide is commonly used in fire extinguishers because it is denser than air and displaces oxygen, effectively smothering the fire.