8. Gniess is obtained from
A. igneous rocks
B. metamorphic rocks
C. sedimentary rocks
D. sedimentary-metamorphic rocks.

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9. Dolomite is a lime stone which contains carbonate of magnesia upto
A.15%
B.20%
C.25%
D.45%

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10. Black marble is generally found in the district of
A. Jodhpur
B. Jaipur
C. Jabalpur
D. Jaisalmer

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11. The softest rock is
A. marble
B. diamond
C. talc
D. quartz.

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12. Shingle is
A. decomposed laterite
B. argillaceous rock
C. water bound pebbles
D. silicious rock.

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13. The rock generally used for roofing, is
A. granite
B. basalt
C. slate
D. pumice.

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14. Good quality stones must
A. be durable
B. be free from clay
C. resist action of acids
D. all the above.

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