Consider the following methods of preservation of timber :1. Dipping2. Brushing or spraying3. Pressure impregnationThe correct sequence in decreasing order of the effectiveness of these methods of preservation is

Consider the following methods of preservation of timber :1. Dipping2.

1.	Consider the following methods of preservation of timber :1. Dipping2. Brushing or spraying3. Pressure impregnationThe correct sequence in decreasing order of the effectiveness of these methods of preservation is
A.	1, 2, 3
B.	2, 1, 3
C.	3, 1, 2
D.	3, 2, 1
Answer» D. 3, 2, 1

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Consider the following methods of preservation of timber :1. Dipping2. Brushing or spraying3. Pressure impregnationThe correct sequence in decreasing order of the effectiveness of these methods of preservation is

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