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Q. |
Which of the following statements is wrong? |
A. | A stone with large percentage of quartz is very soft. |
B. | Quartz has a greasy lustre. |
C. | Felspar is a silicate of aluminium with varying amounts of potash, soda or lime. |
D. | all of these |
Answer» A. A stone with large percentage of quartz is very soft. |
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