Chapter 12: Class 8 Science Exam Tests
Class 8 Science MCQs - Chapter 12
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MCQ 16: He symbol of decibel is
MCQ 17: Humans can hear the sound within range
MCQ 18: The brain interprets vibrations and electrical signals as
MCQ 19: The vibrations in stirrup are greater than ear drum due to arrangement in
MCQ 20: A pitch of sound can be change by changing
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