Class 7 MCQs From Class 7 Science Textbook

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Class 7 Science Competitive Exam: Certification Test 2277

All Around Sounds Notes App & e-Book: MCQ 2277

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MCQ: 2277

In air, change in pressure produces

  1. sound waves
  2. vibrations
  3. light waves
  4. thermal energy

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All Around Sounds Competitive Exam: Class 7 Science App & eBook Notes

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