Question:
Which of the following gas is primarily responsible for the characteristic pungent smell of rotten eggs?
Which of the following gas is primarily responsible for the characteristic pungent smell of rotten eggs?
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Rotten egg smell = Hydrogen Sulfide (H$_2$S)
Burning match smell = Sulfur Dioxide (SO$_2$)
No smell = Carbon Monoxide (CO)
Updated On: Jun 5, 2026
- Sulfur Dioxide
- Hydrogen Sulfide
- Ammonia
- Carbon Monoxide
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The Correct Option is B
Solution and Explanation
Concept:
Certain gases possess characteristic odors that help identify them in nature and industry.
Detailed Chemical Evaluation:
• Hydrogen Sulfide (H$_2$S): Hydrogen sulfide is a colorless, highly toxic gas produced during the decomposition of sulfur-containing organic matter.
• It is responsible for the characteristic smell of rotten eggs.
• It is commonly found in sewage systems, swamps, volcanic gases, and petroleum industries.
• Sulfur Dioxide (SO$_2$): Has a sharp choking smell similar to a burning match.
• Ammonia (NH$_3$): Possesses a strong irritating odor associated with cleaning products.
• Carbon Monoxide (CO): A dangerous poisonous gas that is odorless, colorless, and tasteless.
Detailed Chemical Evaluation:
• Hydrogen Sulfide (H$_2$S): Hydrogen sulfide is a colorless, highly toxic gas produced during the decomposition of sulfur-containing organic matter.
• It is responsible for the characteristic smell of rotten eggs.
• It is commonly found in sewage systems, swamps, volcanic gases, and petroleum industries.
• Sulfur Dioxide (SO$_2$): Has a sharp choking smell similar to a burning match.
• Ammonia (NH$_3$): Possesses a strong irritating odor associated with cleaning products.
• Carbon Monoxide (CO): A dangerous poisonous gas that is odorless, colorless, and tasteless.
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