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C. Write 'T' for true and 'F'for false statements:
1. Marble is an impure form of limestone.
2. Pyrite is an ore of iron.
3. Diesel is obtained from petroleum.
4. Slate is a metamorphic rock.
5. Paraffin wax is obtained from coal.
D. Explain the following topics:
1. Ore
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T
F
T
F
T...............
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