IAS General Studies Prelims Question No. 94
A pressure cooker on a stove with its lid tightly closed and the whistle in position is an example of:
[A] open system
[B] closed system
[C] isolated system
[D] adiabatic system
Closed system is that system which doesn't exchange any matter with its surroundings. An isolated system is that in which neither mass nor energy can enter or leave the system.