Class 7 Science MCQs (Grade 7) From Textbook

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Class 7 Science Entrance Exam: Certification Test 807

Sound Waves and Echoes MCQ App & e-Book: MCQ 807

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MCQ: 807

Ships send a small

  1. pulse to the sea bed
  2. vibration to the tower
  3. piece of food to fish
  4. beam of sound to check the depth
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Sound Waves and Echoes Textbook Tests: Class 7 Science App & eBook MCQ

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