Laws Of Motion Question 66
Question: 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]
Options:
A) Hydrogen
B) Helium is a chemical element with the symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert monatomic gas. It is the second lightest and second most abundant element in the universe, after hydrogen. Helium is used in balloons, deep-sea diving, and as a coolant in magnetic resonance imaging (MRI) machines. It is also used in the production of semiconductors and as a protective gas in welding.
C) Nitrogen is a chemical element with the symbol N and atomic number 7. It is a colorless, odorless, and tasteless gas that makes up about 78% of Earth’s atmosphere. Nitrogen is essential for life and is a key component of proteins and nucleic acids. It exists in various forms, including diatomic molecules (N₂), and is used in fertilizers, explosives, and medical applications.
D) Argon
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Answer:
Correct Answer: D
Solution:
Heavier gas will acquire largest momentum i.e. Xenon.
BETA
