OPSC OAS 2019 PrelimsScience & TechnologyQuestion 18
Solved previous year question from the OPSC OAS/OCS 2019 Preliminary Examination (General Studies), with the official answer key and a detailed explanation.
Question
EEG is used to measure the functioning of:
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Answer & Explanation
Correct answer: (B) Brain
EEG (Electroencephalogram): An EEG is a diagnostic test that records the electrical activity of the brain using electrodes placed on the scalp. It detects and measures brain wave patterns and is commonly used to:
- Diagnose epilepsy and seizure disorders
- Detect brain abnormalities
- Monitor brain activity during sleep studies
- Assess head injuries and brain tumors
- Evaluate brain death
Electroencephalogram (EEG) records the electrical activity of the brain to assess its function.

