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1. |
Consider the following statements :A good soil for making bricks should contain1. about 30% alumina 2. about 10% lime nodules 3. a small quantity of iron oxides 4. about 15% magnesia.Of these statements : |
A. | 1 and 2 are correct |
B. | 1 and 3 are correct |
C. | 1, 3 and 4 are correct |
D. | 2, 3 and 4 are correct |
Answer» C. 1, 3 and 4 are correct | |