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Q. |
The sodium carbonate lining consists of at lest |
A. | 6% sodium carbonate and 10% clay |
B. | 10% sodium carbonate and 6% clay |
C. | 1% sodium carbonate and 6% clay |
D. | 1% clay and 6% sodium carbonate |
Answer» A. 6% sodium carbonate and 10% clay |
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