Q.

Speed of sound is the greatest in :

A. Water
B. Air
C. Glass
D. Glycerine
Answer» C. Glass
Explanation: Sound travels faster in liquids and non-porous solids than it does in air. It travels about 4.3 times as fast in water (1,484 m/s), and nearly 15 times as fast in iron (5,120 m/s), than in air at 20 degrees Celsius.

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