Question

An iron cylinder contains helium at a pressure of $250kPa$ and ${27}^{o}C$. The cylinder can withstand a pressure at ${10}^{6}Pa$. The room in which cylinder is placed catches fire. Predict whether the cylinder below up before it melts or not ($mp$ of cylinder $=1800K$)

• A. Yes
• B. No
• C. Can't say anything
• D. None of these

Answer 1

Answer: (A)

Yes

$P=\frac{P^{\prime }}{T^{\prime }}=\frac{250}{300}\times 1800=1500kPa=1.5\times {10}^{6}Pa$
Since the pressure exceeds $1\times {10}^{6}Pa$, the iron cylinder will blow up before it melts.