स्फिग्मोमेनोमीटर
General competitive examinations frequently test candidates on Current Affairs topics. Questions like "इनमें से रक्त दाब का मापक यंत्र कौन-सा है?..." are designed to verify factual recall and general awareness. Regular practice on similar MCQs ensures a higher accuracy rate. The correct option here is स्फिग्मोमेनोमीटर.