1. Area of the hole in the lid
2. Temperature of the flame
3. Weight of the lid
Select the correct answer using the code given below.
(a) 1 and 2 Only
(b) 2 and 3 Only
(c) 1 and 3 Only
(d) 1, 2 and 3
Ans: c
Explanation:
According to the principle of Gay-lussac’s Law, P1/T1=P2/T2 i.e pressure and temperature are directly related. As pressure increases in the cooker, temperature also will naturally increase.
According to the Ideal Gas Law PV=nRT, as pressure increases, temperature must also increase to balance out the equation on both sides.
The pressure cooker works on the principle of increasing the internal pressure. Locking lids and the valve system release and regulate pressure in a pressure cooker.
As pressure increases inside the cooker, the high-pressure gas moves around the food and the food is cooked through convection.
Thus, the temperature at which the food is cooked depends mainly upon internal pressure which is regulated by the lid and valve but not the temperature of the flame.
Hence, option c is correct.
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