Download Sound Waves MCQ App | Class 7 Science e-Book PDF
Class 7 Science Entrance Tests: Practice Test 18 (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. 23-18 to learn Class 7 Science Course. Study Speed of Sound Multiple Choice Questions and Answers (MCQs) PDF, Sound Waves Quiz Questions and Answers to learn online schools courses. The Sound Waves MCQ App Download: Free Class 7 Science MCQs App to learn speed of sound, ultrasound, waves of energy, sound waves and echoes, vibrations and sound waves test prep for distance education.
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The loss of sound energy depends on
A component of our body that reflects x-rays is known as
Sound waves spread out from
The longer, the echo takes, the
Sound moves in air because
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