Which term denotes the act of reducing the volume of gas?

Which term denotes the act of reducing the volume of gas?

• A. Compression
• B. Cycle
• C. Fuel
• D. Reciprocating

Answer: (A)

Reducing the volume of a gas is called compression. When you compress gas, you squeeze it into a smaller space, which raises its pressure (and usually its temperature) if the amount of gas stays the same, as described by Boyle’s law. In practical terms, devices like compressors use pistons or impellers to make the gas denser by shrinking its volume. The other terms don’t describe the volume-reducing process: a cycle refers to a sequence of processes, fuel is the energy source for the gas-powered system, and reciprocating describes back-and-forth motion (such as a piston) or a type of engine, not the act of making the volume smaller.

Reducing the volume of a gas is called compression. When you compress gas, you squeeze it into a smaller space, which raises its pressure (and usually its temperature) if the amount of gas stays the same, as described by Boyle’s law. In practical terms, devices like compressors use pistons or impellers to make the gas denser by shrinking its volume. The other terms don’t describe the volume-reducing process: a cycle refers to a sequence of processes, fuel is the energy source for the gas-powered system, and reciprocating describes back-and-forth motion (such as a piston) or a type of engine, not the act of making the volume smaller.