8. 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
(a) Hydrogen (b) Helium
(c) Nitrogen (d) Argon
Ans. d
(6)
5/5 - (1 vote)
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