Chapter 18: Class 7 Science Exam Tests
Class 7 Science MCQs - Chapter 18
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MCQ 96: The gases that required to manufacture 'PVC' are
MCQ 97: The water melts and freezes at
MCQ 98: The force of attraction between particles of gases is
MCQ 99: 'Bakelite' is used to
MCQ 100: The speed of particles is fastest in
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