Vitamins Learning App | Class 9 Biology Quiz e-Book PDF

Class 9 Biology MCQs (Grade 9) From Textbook

Class 9 Biology MCQs – Certification Test 448

Vitamins Quiz (Question 448) – Learning App & e-Book Download

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MCQ 448: The disease condition in which synthesized collagens are unstable is called:

  1. tuberculosis
  2. angina
  3. hemophilia
  4. scurvy

Vitamins Quiz App & e-Book – Class 9 Biology Exam Prep

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