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Class 7 Science MCQs App Download | Sound and Vacuum e-Book PDF

Class 7 Science Competitive Exam: Certification Test 966

Sound and Vacuum MCQs App & e-Book: MCQ 966

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MCQ: 966

Sound cannot travel in vacuum because

  1. there is no pressure in vacuum
  2. there is no air in vacuum
  3. there is no humidity in vacuum
  4. there are no particle in vacuum
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Sound and Vacuum Competitive Exam: Class 7 Science App & eBook MCQs

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Sound and Vacuum MCQs App (iOS & Android)

Sound and Vacuum MCQs App

7th Grade Science MCQs App (Android & iOS)

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