Multiple choice Name the aeroplane which travels faster than sound in air? Ultrasonic plane Supersonic plane Mega sonic plane Metalloid plane Reveal answer Fill a bubble to check yourself B Correct answer Explanation Supersonic refers to speeds exceeding the speed of sound (Mach 1). Aircraft like the Concorde and fighter jets are supersonic planes. 'Ultrasonic' refers to sound frequencies above human hearing, not aircraft speed.