Question:
Which of the following gases is commonly used as a compressed gas propellant?
Which of the following gases is commonly used as a compressed gas propellant?
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Aerosol products use propellants to expel the contents.
Updated On: Jun 24, 2026
- Nitrogen
- Chlorofluorocarbons
- Dimethyl ether
- Propane
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The Correct Option is A
Solution and Explanation
Concept:
Aerosol products use propellants to expel the contents. Propellants are of two main types: liquefied gases (which can liquefy under pressure) and compressed gases (which stay as gases under pressure in the headspace of the container).
Step 1: A compressed gas propellant is one that remains a gas in the can and simply pushes the product out, like air over a liquid. Nitrogen is the classic compressed-gas propellant — it is inert, non-toxic, and insoluble, so it just provides pressure to dispense the product.
Step 2: The others are liquefied-gas propellants — chlorofluorocarbons (now largely banned), dimethyl ether, and propane all liquefy under pressure and vaporize when released, which is a different propellant category.
Answer: Option (1) — Nitrogen is commonly used as a compressed gas propellant. (1)
Aerosol products use propellants to expel the contents. Propellants are of two main types: liquefied gases (which can liquefy under pressure) and compressed gases (which stay as gases under pressure in the headspace of the container).
Step 1: A compressed gas propellant is one that remains a gas in the can and simply pushes the product out, like air over a liquid. Nitrogen is the classic compressed-gas propellant — it is inert, non-toxic, and insoluble, so it just provides pressure to dispense the product.
Step 2: The others are liquefied-gas propellants — chlorofluorocarbons (now largely banned), dimethyl ether, and propane all liquefy under pressure and vaporize when released, which is a different propellant category.
Answer: Option (1) — Nitrogen is commonly used as a compressed gas propellant. (1)
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