Chemistry · Elements and Compounds
निम्नलिखित तत्वों/खनिजों को उनके प्राथमिक स्रोतों या रूपों के साथ सुमेलित कीजिए: a) नाइट्रोजन - i) पाइराइट्स b) आयरन - ii) कार्बनिक पदार्थ c) कैल्शियम - iii) टूमलाइन d) बोरॉन - iv) जिप्सम
- 1a-iii, b-iv, c-ii, d-i
- 2a-iv, b-iii, c-i, d-ii
- 3a-ii, b-i, c-iv, d-iii✓
- 4a-i, b-ii, c-iii, d-iv
सही उत्तर देखें
a-ii, b-i, c-iv, d-iii
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