Download Class 7 Science Study App | Sound Absorption Quiz e-Book PDF
Class 7 Science MCQs (Grade 7) From Textbook

Class 7 Science MCQs – Certification Test 880

Sound Absorption Quiz (Question 880) – Study App & e-Book Download

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Sound Absorption Study Guide – Google Book Sound Absorption Study Guide – Apple Book Sound Absorption Study Guide – Kobo Book

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MCQ 880: Repetition of sound in empty hall is known as:

  1. echo
  2. harsh echo
  3. hollow echo
  4. soft echo

Class 7 Science Quiz App & e-Book – Sound Absorption Admission Tests

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