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Class 7 Science Learning Guide: Certification Test 971

Musical Instruments MCQ App & e-Book: MCQ 971

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MCQ: 971

Sound created by musical instruments is amplified by

  1. increasing string vibration
  2. decreasing string vibration
  3. wooden sound box
  4. metallic sound box
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Musical Instruments Learning Guide: Class 7 Science App & eBook MCQ

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Musical Instruments MCQ App (iOS & Android)

Musical Instruments MCQ App

7th Grade Science MCQ App (Android & iOS)

7th Grade Science MCQ App

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Earth Science MCQ App

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6th Grade Science MCQ App

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