RAS question
Semiconductor chips are fabricated in ultra-clean environments called:
Correct answer: (B) Clean rooms.
Semiconductor chips are fabricated in ultra-clean, contamination-controlled environments called clean rooms.
Explanation
Semiconductor fabrication needs clean rooms because chip-making is extremely sensitive to particulate contamination: even tiny dust particles can ruin the manufacturing process. The official Semi-Conductor Laboratory page for its CMOS Process and Fabrication Facility supports this directly. It describes SCL's 8-inch wafer fabrication line at the 180 nm CMOS technology node and states that the fab has clean rooms of Class 1, 10, 100 and 1000 with controlled environmental conditions. That is why the term in the question is not a general workplace, storage site or computing room, but a clean room: the facility is designed around controlling contamination and environmental conditions during wafer fabrication.
Why the other options are wrong
- (A) Greenhouses control conditions for plant growth, whereas semiconductor fabrication needs contamination-controlled clean rooms.
- (C) Data centres store and process data, but they are not the ultra-clean wafer-fabrication environments described for chip manufacturing.
- (D) Server rooms house computing equipment; they do not provide the clean-room conditions required for semiconductor fabrication.
Concept
This tests basic Science and Technology terminology around semiconductor manufacturing. RAS uses such items to check whether candidates can connect an industrial process with the specialised environment it requires.