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5. Coal is used for cooking.
C. Very Short Answer Questions.

1. What is the use of chalks?
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2. What is the earth made up of?
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3. Name a precious stone.
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4. What is Taj Mahal made up of?
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5. Which rock is used to make blackboards?
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D. Short Answer Questions.
1. Which minerals are used to make jewellery?
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2. What is diamond used for?
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3. What is China clay?
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4. What is coal? Where is it used?
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5. Name any two hard rocks and their uses.
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6. What is graphite?
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