A rocket is propelled by a gas which is initially at a temperature of – McqOptions

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1.	A rocket is propelled by a gas which is initially at a temperature of 4000 K. The temperature of the gas falls to 1000 K as it leaves the exhaust nozzle. The gas which will acquire the largest momentum while leaving the nozzle, is [SCRA 1994]
A.	Hydrogen
B.	Helium
C.	Nitrogen
D.	Argon
Answer» E.

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