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1. |
AsCu, a preservative for wood, developed by the Forest Research Institute, Dehradun, comprises of chemicals:As2O5.2H2O, CuSO4.5H2O and K2Cr2C7 in the proportion of |
A. | 1 : 1 : 1 |
B. | 1 : 2 : 3 |
C. | 1 : 2 : 4 |
D. | 1 : 3 : 4 |
Answer» E. | |