Class 7 Science MCQs – Certification Test 456

Sound Waves and Noise Quiz (Question 456) – Learning App & e-Book Download

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MCQ 456: The normal value of decibel that our ears can detect is:

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Download the Sound Waves and Noise Quiz App: Learn Sound Waves and Noise Notes, 7th Grade Science Quiz App, and 6th Grade Science Quiz App for science student remote learning.

Free "7th Grade Science Learning" App: Download the Sound Waves and Noise Quiz App (Android & iOS) to join remote courses. Download App Store & Play Store Study Apps with all functionalities for science digital education access.