21. Which of the following pairs of minerals and its usage is correct? A. Gold: Cosmetics C. Iron: Steel B. Gypsum: Electrical'wirings D. Sulfur: Glass
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21. Which of the following pairs of minerals and its usage is correct? A. Gold: Cosmetics C. Iron: Steel B. Gypsum: Electrical'wirings D. Sulfur: Glass
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Answer:
C. Iron:Steel
Explanation:
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Answer:
B. po
Explanation:
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