Importance of Fertilizers Study App | Class 9 Biology MCQ e-Book PDF

Class 9 Biology MCQs (Grade 9) From Textbook

Class 9 Biology MCQs – Certification Test 39

Importance of Fertilizers MCQ (Question 39) – Study App & e-Book Download

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MCQ 39: If the nitrogen is the main element of fertilizers then the fertilizers are classified as:

  1. structural fertilizers
  2. non-structural fertilizers
  3. nitrogen fertilizers
  4. respiratory fertilizers

Importance of Fertilizers MCQ App & e-Book – Class 9 Biology Placement Tests

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