Q1. Who is credited with inventing the earliest known organ, the hydraulis?
A. Aristotle
B. Ctesibius of Alexandria
C. Pythagoras
D. Plato
Answer: B. Ctesibius of Alexandria
Q2. What replaced water pressure in ancient organs to supply wind?
A. Electric blowers
B. Foot pedals
C. Hand-pumped bellows
D. Steam engines
Answer: C. Hand-pumped bellows
Q3. In what century did pipe organs begin to appear in Western European churches?
A. 3rd century
B. 8th century
C. 12th century
D. 15th century
Answer: B. 8th century













