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Class 7 Science MCQs – Certification Test 1526

Chemical Changes MCQs (Question 1526) – Study App & e-Book Download

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MCQ 1526: The first thing that happens during chemical reaction is that:

  1. a new substance is formed
  2. a substance is reversed to its components
  3. energy is given out
  4. atoms remain same
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Class 7 Science MCQs App & e-Book – Chemical Changes Admission Tests

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