During adiabatic compression of ideal gas:
AT decreases
BT constant
CRandom
DT INCREASES (work done on gas → internal energy → T rises)
Answer & Solution
Correct answer: D. T INCREASES (work done on gas → internal energy → T rises)
Adiabatic (Q = 0): ΔU = W (work done on gas). Compression means work done ON gas (W > 0). ΔU > 0 → T increases. Hence rubbing a bike pump heats up (compressing air).
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