Chemistry · Elements and Compounds
Match the following elements/minerals with their primary sources or forms: a) Nitrogen - i) Pyrites b) Iron - ii) Organic matter c) Calcium - iii) Tourmaline d) Boron - iv) Gypsum
- 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
Correct answer
a-ii, b-i, c-iv, d-iii
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