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Class 7 Science MCQs (Grade 7) From Textbook

Class 7 Science MCQs – Certification Test 340

Sound and Vacuum Quiz (Question 340) – Learning App & e-Book Download

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MCQ 340: We cannot hear alarm of a clock if there is:

  1. vacuum in the jar
  2. air in the jar
  3. liquid in the jar
  4. solid in the jar
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Sound and Vacuum Quiz App & e-Book – Class 7 Science Exam Prep

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Sound and Vacuum Quiz App

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7th Grade Science Quiz App

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