Download Sound Waves MCQ App | Class 7 Science e-Book PDF
Class 7 Science Entrance Tests: Practice Test 26 (Chapter 23)
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The Sound waves Multiple Choice Questions (MCQ Quiz) with Answers PDF (Sound Waves MCQ PDF e-Book) download Ch. 23-26 to learn Class 7 Science Course. Study Sound Waves and Echoes Multiple Choice Questions and Answers (MCQs) PDF, Sound Waves Quiz Questions and Answers to study online certificate courses. The Sound Waves MCQ App Download: Free Class 7 Science MCQs App to learn sound waves and echoes, waves of energy, frequency and pitch, speed of sound, vibrations and sound waves test prep for online degrees.
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'Dolphins' can capture their prey using
When sound travels, the air molecules vibrate
The highest level of frequency which human ear can detect is
Sound travels fastest in
A hand bell stimulates the
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