निम्नलिखित में से कौन सभी तीन वृटत्तपोपक हैं?
- Aबोरॉन, जिंक, मैंगनीज
- Bलौद, ताम्र, मोलीब्डेनम
- Cमोलीन्डेनम, मैग्नीशियम, मैंगनीज
- ✓नाइट्रोजन, पोटेशियम, फास्फोरस
Answer: D.
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Answer: D.
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