Question

A pressure cooker contains air at 1 atm and ${30}^{\circ }$C. If the safety value of the cooler blows when the inside pressure $\ge$ 3 atm, then the maximum temperature of the air, inside the cooker can be

• A. 90°C
• B. 636°C
• C. 909°C
• D. 363°C

Answer 1

The correct option is B 636°C

Since volume is constant,
Hence $\frac{P_1}{P_2}=\frac{T_1}{T_2}\Rightarrow \frac{1}{3}=\frac{(273+30)}{T_2}$
$\Rightarrow$ $T_2$ = 909 K = ${636}^{\circ }$C