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Class 9 Biology MCQs (Grade 9) From Textbook

Class 9 Biology MCQs – Certification Test 279

Human Food Components MCQ (Question 279) – App & e-Book Download

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MCQ 279: The minerals that are important for heart function, muscle contraction and nerve impulse transmission are:

  1. sodium, potassium and chloride
  2. zinc, nickel and iron
  3. boron, copper and zinc
  4. Sulphur, iron and calcium

Human Food Components MCQ App & e-Book – Class 9 Biology Textbook Tests

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