Class 9 Biology MCQs (Grade 9) From Textbook

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

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