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Class 7 Science Admission Tests: Certification Test 1270

Water Treatment Study App & e-Book: MCQ 1270

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MCQ: 1270

The alum is a compound of two elements, those are

  1. aluminum and nitrate
  2. aluminum and sulfate
  3. sodium and nitrate
  4. sodium and sulfate

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Water Treatment Admission Tests: Class 7 Science App & eBook MCQs

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7th Grade Science MCQs App (Android & iOS)

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